Class 6 Exam  >  Class 6 Notes  >  NCERT Textbooks & Solutions for Class 6  >  NCERT Solutions: Fractions (Exercise 7.4, 7.5 & 7.6)

NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)

Exercise 7.4

Q1. Write the shaded portion as a fraction. Arrange them in ascending and descending order using correct sign ‘<’, ‘=’, ‘>’ between the fractions:
(a)NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
(b) NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6) NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
(c) Show NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6) on the number line. Put appropriate signs between the fractions given.
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Ans:
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Ascending order:  NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Descending order:  NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Ascending order:  NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Descending order: NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
(c) Number line
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)


Q2. Compare the fractions and put an appropriate sign.
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Ans:
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)


Q3. Make five more each pairs and put appropriate signs. 
Ans:
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)


Q4. Look at the figures and write ‘<’ or ‘>’ between the given pairs of fractions.NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)

NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Make five more such problems and solve them with your friends. 
Ans:
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Five more such problems:
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Ans:
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)


Q5. How quickly can you do this? Fill appropriate sign (‘<’, ‘=’, ‘>’)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Ans:
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)


Q6. The following fractions represent just three different numbers. Separate them into three groups of equivalent fractions, by changing each one to its simplest form.
(a) 2/12
(b) 3/15
(c) 8/50
(d) 16/100
(e) 10/60
(f) 15/75
(g) 12/60
(h) 16/96
(i) 12/75
(j) 12/72
(k) 3/18
(l) 4/25
Ans:
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Equivalent groups:
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)


Q7. Find answers to the following. Write and indicate how you solved them.
(a)  NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
(b) NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
(c) NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
(d) NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Ans:
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)  [∴ L.C.M. of 9 and 5 is 45]
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)   [∴ L.C.M. of 16 and 9 is 144]
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)   [∴ L.C.M. of 5 and 20 is 100]
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6) [∴ L.C.M. of 15 and 30 is 30]
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)


Q8. Ila read 25 pages of a book containing 100 pages. Lalita read 2/5 of the same book. Who reads less?
Ans: Ila read 25 pages out of 100 pages.
Fraction of reading the pages =  25/100 = 1/4 th part of the book
Lalita read 2/5 th part of the book  = 40/100 pages
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Therefore, Ila read less.


Q9. Rafiq exercised for 3/6 of an hour, while Rohit exercised for 3/4of an hour. Who exercised for a longer time?
Ans: Rafiq exercised 3/6 of an hour.
Rohit exercised 3/4 of an hour.
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Therefore, Rohit exercised for a longer time.


Q10. In class A of 25 students, 20 passed in first class; in another class B of 30 students, 24 passed in first class. In which class was a greater fraction of students getting first class?
Ans: In class A, 20 passed out of 25, i.e., 20/25 = 4/5
In class B, 24 passed out of 30, i.e., 24/30 = 4/5
Hence, each class have the same fraction of student getting a first class.


Exercise 7.5

Q1. Write these fractions appropriately as additions or subtractions:
(a)NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
(b) NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
(c) NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Ans:
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)


Q2. Solve:
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Ans:
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)


Q3. Shubham painted 2/3of the wall space in his room. His sister Madhavi helped and painted 1/3 of the wall space. How much did they paint together?
Ans: Fraction of wall painted by Shubham = 2/3
Fraction of wall painted by Madhavi = 1/3
Total painting by both of them = NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Therefore, they painted the complete wall.


Q4. Fill in the missing fractions.

NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)

Ans:
(a) 4/10
(b) 8/21
(c) 6/6
(d) 7/27


Q5. Javed was given a basket of oranges. What fraction of oranges was left in the basket?
Ans:
Total = 1
Fraction of Orange left  NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Thus, 2/7 oranges were left in the basket.


Exercise 7.6

Q1. Solve
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Ans:
(a) L.C.M. of 3 and 7 is 21
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
(b) L.C.M. of 10 and 15 is 30
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
(c) L.C.M. of 9 and 7 is 63
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)  NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
(d)
 NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
(e)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
(f)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
(g)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
(h)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
(i)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
(j)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
(k)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
(l)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
(m)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
(n)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)


Q2. Sarita bought 2/5 metre of ribbon and Lalita 3/4 metre of ribbon. What is the total length of the ribbon they bought?
Ans: Ribbon bought by Sarita = 2/5 m and Ribbon bought by Lalita = 3/4 m
The total length of ribbon = NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Therefore, they bought  NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)  of ribbon.


Q3. Naina was given NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6) piece of cake and Najma was given NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6) piece of cake. Find the total amount of cake was given to both of them.
Ans: Cake taken by Naina = NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6) piece and Cake taken by Najma NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6) piece
Total cake taken
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Therefore, the total consumption of cake is  NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)


Q4. Fill in the boxes: 
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Ans:
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)


Q5. Complete the addition-subtraction box.
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Ans:
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)


Q6. A piece of wire 7/8 metre long broke into two pieces. One piece was 1/4 metre long. How long is the other piece?
Ans:
The total length of wire = 7/8 meter
Length of first part = 1/4 meter
Remaining part   NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)  [∴ L.C.M. of 8 and 4 is 8]
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Therefore, the length of the remaining part is 5/8 meter.


Q7. Nandini’s house is 9/10 km from her school. She walked some distance and then took a bus for 1/2 km to reach the school. How far did she walk?
Ans:
The total distance between school and house 9/10 km
Distance covered by bus = 1/2 km
Remaining distance NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6) [∴ L.C.M. of 10 and 2 is 10]
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Therefore, the distance covered by walking is 2/5 km.


Q8. Asha and Samuel have bookshelves of the same size partly filled with books. Asha’s shelf is 5/6 th full and Samuel’s shelf is 2/5 th full. Whose bookshelf is more full? By what fraction?
Ans:
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)  [∴ L.C.M. of 6 and 5 is 30]
∴    NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
⇒   NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
∴ Asha’s bookshelf is more covered than Samuel.
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)

Q9. Jaidev takes NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)minutes to walk across the school ground. Rahul takes 7/4 minutes to do the same. Who takes less time and by what fraction?
Ans:
Time taken by Jaidev =  NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)minutes = 11/5 minutes
Time taken by Rahul =  7/4 minutes
Difference  NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6) [∴ L.C.M. of 5 and 4 is 20]
NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)
Thus, Rahul takes less time, which is 9/20 minutes.

The document NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6) is a part of the Class 6 Course NCERT Textbooks & Solutions for Class 6.
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FAQs on NCERT Solutions for Class 8 Maths - Fractions (Exercise 7.4, 7.5 and 7.6)

1. What are fractions?
Ans. Fractions are numbers that represent parts of a whole. They consist of a numerator (the top number) and a denominator (the bottom number), separated by a fraction bar. The numerator represents the number of parts being considered, while the denominator represents the total number of equal parts that make up the whole.
2. How do you add fractions?
Ans. To add fractions, you first need to make sure they have a common denominator. This can be done by finding a common multiple of the denominators, or by using equivalent fractions. Once the fractions have the same denominator, you can add the numerators and simplify the result, if necessary.
3. What is a mixed number?
Ans. A mixed number is a combination of a whole number and a fraction. It is written in the form of a whole number followed by a fraction, such as 3 1/2. Mixed numbers can be converted to improper fractions by multiplying the whole number by the denominator of the fraction, adding the numerator, and then placing the result over the denominator.
4. How do you subtract fractions?
Ans. To subtract fractions, you also need to make sure they have a common denominator. Once you have found a common denominator, you can subtract the numerators and simplify the result, if necessary. It is important to remember to borrow from the whole number if necessary when subtracting mixed numbers.
5. How do you simplify fractions?
Ans. To simplify a fraction, you need to divide both the numerator and denominator by their greatest common factor (GCF). The GCF is the largest number that divides evenly into both the numerator and denominator. Simplifying fractions can make them easier to work with and compare, and can also help to find equivalent fractions.
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