The document RD Sharma Solutions - Ex-2.2, Fractions, Class 7, Math Class 7 Notes | EduRev is a part of the Class 7 Course RD Sharma Solutions for Class 7 Mathematics.

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**Multiply:**

(ii)

(iii)

(iv)

Find the product:

(ii)

(iii)

(iv)

Simplify:

(ii)

(iii)

Find:

Which is greater?

convert 2/7 to its equivalent fraction with denominator as 14

we know 6>4

Find:

(i) 7/11 of Rs 330

(ii) 5/9 of 108 metres

(iii) 3/7 of 42 litres

(iv) 1/12 of an hour

(v) 5/6 of an year

(vi) 3/20 of a kg

(vii) 7/20 of a litre

(viii) 5/6 of a day

(ix) 2/7 of a week

1 year =12 months

1 kg =1000 g

1 l =1000 ml

**Ravish reads 1/3 part of a book in 1 hour. How much part of the book will he read in houurs?**

In 1 hour Ravish reads 1/3 of the book

Part of book Ravish will read in 11/5 hours = Part read in 1 hour × 11/15

Part of book Ravish will read in 11/5 hours =

**Lipika reads a book for hours everyday. She reads the entire book in 6 days. How many hours in all were required by her to read the book?**

In one day, Lipika reads for

Total hours required

**Find the area of a rectangular park which is ** m long and m broad.

Length of rectangular park

⇒Length of rectangular park = 125/3 m

Width of rectangular park =

⇒Width of rectangular park = 93/5 m

Area of rectangular park = Length of rectangular park × Width of rectangular park

Area of rectangular park =

**If milk is available at Rs per litre, find the cost of litres of milk.**

Cost of 1 litre milk = Rs.

⇒Cost of 1 litre milk =Rs. 71/4

Cost of 37/5litres milk = Cost of 1 litre milk x 37/5

Cost of 37/5litres milk

**Sharda can walk km813 km in one hour. How much distance will she cover in hours?**

Distance covered by Sharda in 1 hour = 25/3 km.

Distance covered by Sharda in 12/5hours = Distance covered in 1 hour × (12/50

⇒⇒Distance covered by Sharda in 12/5 hours =

**A sugar bag contains 30 kg of sugar. After consuming 2/3 of it, how much sugar is left in the bag?**

Total amount of sugar in the bag = 30 kg

⇒Amount of sugar consumed = 20 kg

Sugar left in the bag = Total amount of sugar in the bag − Amount of sugar consumed

Sugar left in the bag = 30−20 =10 kg

**Each side of a square is ** m long. Find its area

Area of square=Side × Side

**There are 45 students in a class and 3/5 of them are boys. How many girls are there in the class?**

**Answer 15:**

Therefore, 27 students are boys.

Number of girls=Total number of students in the class − Number of boys

Number of girls=45−27=18

Therefore, 18 students are girls.