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If 2, 3, 28 and x are in proportion then find the value of x.- a)42
- b)28
- c)56
- d)14
Correct answer is option 'A'. Can you explain this answer?
If 2, 3, 28 and x are in proportion then find the value of x.
a)
42
b)
28
c)
56
d)
14
|
Ishan Choudhury answered |
Let present age of father be 7x and that of son is 2x
after 10 years, their ages will be 7x+10 and 2x+10 respectively
so ratio will be
(7x+10)/(2x+10) = 9/4
28x+40 = 18x+90
10x = 50
x = 5
so present age of father is 7x =
35 years
If 12, 14; 9 and x are in proportion then find the value of x.
- a)21
- b)9
- c)10.5
- d)105
Correct answer is option 'C'. Can you explain this answer?
If 12, 14; 9 and x are in proportion then find the value of x.
a)
21
b)
9
c)
10.5
d)
105
|
Varun Kapoor answered |
12/14 = 9/x
12x=9x14
x=9x14/12
x=21/2
x=10.5
12x=9x14
x=9x14/12
x=21/2
x=10.5
If 5, 30, 3 and x are in proportion then find the value of x.
- a)24
- b)6
- c)18
- d)15
Correct answer is option 'C'. Can you explain this answer?
If 5, 30, 3 and x are in proportion then find the value of x.
a)
24
b)
6
c)
18
d)
15
|
EduRev Class 6 answered |
As they are in Proportion
so 5/30=3/x
1/6=3/x
so cross multiply
x=18
so 5/30=3/x
1/6=3/x
so cross multiply
x=18
If 8, 18, 18 and x in proportion then find the value of x.
- a)40.5
- b)18
- c)405
- d)81
Correct answer is option 'A'. Can you explain this answer?
If 8, 18, 18 and x in proportion then find the value of x.
a)
40.5
b)
18
c)
405
d)
81
|
|
Varun Kapoor answered |
8/18 :: 18/x
By cross multiply, we get
8x = 324
x = 40.5
If x, 30,24 and 16 are in proportion then find the value of x.- a)45
- b)60
- c)15
- d)80
Correct answer is option 'A'. Can you explain this answer?
If x, 30,24 and 16 are in proportion then find the value of x.
a)
45
b)
60
c)
15
d)
80
|
Mahesh Chavan answered |
Given: x, 30, 24, 16 are in proportion.
To find: The value of x.
Solution:
The given numbers are in proportion. This means that the ratio of any two consecutive numbers is equal to the ratio of the other two consecutive numbers.
Therefore, we can write:
x/30 = 24/16
Cross-multiplying, we get:
16x = 30 × 24
Simplifying, we get:
16x = 720
Dividing both sides by 16, we get:
x = 45
Therefore, the value of x is 45.
Hence, option A is the correct answer.
To find: The value of x.
Solution:
The given numbers are in proportion. This means that the ratio of any two consecutive numbers is equal to the ratio of the other two consecutive numbers.
Therefore, we can write:
x/30 = 24/16
Cross-multiplying, we get:
16x = 30 × 24
Simplifying, we get:
16x = 720
Dividing both sides by 16, we get:
x = 45
Therefore, the value of x is 45.
Hence, option A is the correct answer.
A car travels 90 km in 5/2 hours. Find the distance covered in 3 hours with the same speed.- a)81 km
- b)99 km
- c)108 km
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
A car travels 90 km in 5/2 hours. Find the distance covered in 3 hours with the same speed.
a)
81 km
b)
99 km
c)
108 km
d)
None of these
|
Athira Basak answered |
Speed = distance /time
Speed = 90/(5/2)
= 36 km/hr
Now as speed remains same
36 = distance / 2
Distance = 72km
In a school, there were 73 holidays in one year. What is the ratio of the number of holidays to the number of days in one year?- a)it is 5:1
- b)it is 1:5
- c)it is 1:4
- d)None of these
Correct answer is option 'B'. Can you explain this answer?
In a school, there were 73 holidays in one year. What is the ratio of the number of holidays to the number of days in one year?
a)
it is 5:1
b)
it is 1:5
c)
it is 1:4
d)
None of these
|
Gayatri Chavan answered |
Given:
Number of holidays in a year = 73.
To do:
We have to find the ratio of the number of holidays to the number of days in one year.
Solution:
Number of days in a year = 365.
Therefore,
The ratio of the number of holidays to the number of days in one year = 73:365 = 1:5.
If 18, 16, 99 and x are in proportion then find the value of x.- a)88
- b)32
- c)99
- d)64
Correct answer is option 'A'. Can you explain this answer?
If 18, 16, 99 and x are in proportion then find the value of x.
a)
88
b)
32
c)
99
d)
64
|
|
Mansi Yadav answered |
18/16 = 9/8
99/88 = 9/8
9/8 : 9/8
, That is why A (88) is correct
99/88 = 9/8
9/8 : 9/8
, That is why A (88) is correct
If 9, 18, x and 8 are in proportion then find the value of x.
- a)2
- b)4
- c)3
- d)None of these
Correct answer is option 'B'. Can you explain this answer?
If 9, 18, x and 8 are in proportion then find the value of x.
a)
2
b)
4
c)
3
d)
None of these
|
Neha Mehta answered |
Given: 9, 18, x, 8 are in proportion
To find: value of x
Solution:
We know that when four numbers are in proportion, the product of the extremes is equal to the product of the means.
So, we can write:
9 × 8 = 18 × x
72 = 18x
4 = x
Therefore, the value of x is 4.
Hence, option B is the correct answer.
To find: value of x
Solution:
We know that when four numbers are in proportion, the product of the extremes is equal to the product of the means.
So, we can write:
9 × 8 = 18 × x
72 = 18x
4 = x
Therefore, the value of x is 4.
Hence, option B is the correct answer.
If x, 24 and 30,16 are in proportion, then find the value of x.- a)30
- b)45
- c)15
- d)None of these
Correct answer is option 'B'. Can you explain this answer?
If x, 24 and 30,16 are in proportion, then find the value of x.
a)
30
b)
45
c)
15
d)
None of these
|
|
Aathmika Shree answered |
Hngvyytvtffvyhgbhgbyhyhy fog and all that but the way he looks in his
The mean proportion of 9 and 16 is- a)16
- b)9
- c)12
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
The mean proportion of 9 and 16 is
a)
16
b)
9
c)
12
d)
None of these
|
Arjun Desai answered |
Let mean proportion be x.
9/x = x/16
x^2 = 9 x 16 = 144
x = 12
There are 45 persons working in an office. If the number of females is 25 and the remaining are males, find the ratio of the number of females to number of males.- a)it is 1:5
- b)it is 1:4
- c)it is 4:5
- d)it is 5:4
Correct answer is option 'D'. Can you explain this answer?
There are 45 persons working in an office. If the number of females is 25 and the remaining are males, find the ratio of the number of females to number of males.
a)
it is 1:5
b)
it is 1:4
c)
it is 4:5
d)
it is 5:4
|
garima sharma answered |
Answer will be 5:4
Find the ratio of 81 to 108.- a)it is 1:4
- b)it is 4:3
- c)it is 3:4
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
Find the ratio of 81 to 108.
a)
it is 1:4
b)
it is 4:3
c)
it is 3:4
d)
None of these
|
Saikat Rane answered |
Ratio refers to the quantitative relationship between two amounts or values. It is expressed in the form of a:b, where a and b are the two values being compared.
To find the ratio of 81 to 108, we need to divide both numbers by their greatest common factor, which is 27.
81 ÷ 27 = 3
108 ÷ 27 = 4
Therefore, the ratio of 81 to 108 is 3:4.
Option C, "it is 3:4", is the correct answer.
To find the ratio of 81 to 108, we need to divide both numbers by their greatest common factor, which is 27.
81 ÷ 27 = 3
108 ÷ 27 = 4
Therefore, the ratio of 81 to 108 is 3:4.
Option C, "it is 3:4", is the correct answer.
Length of a room is 30 m and its breadth is 20 m. Find the ratio of length of the room to the breadth of the room.- a)it is 2:3
- b)it is 3:2
- c)it is 1:3
- d)it is 1:2
Correct answer is option 'B'. Can you explain this answer?
Length of a room is 30 m and its breadth is 20 m. Find the ratio of length of the room to the breadth of the room.
a)
it is 2:3
b)
it is 3:2
c)
it is 1:3
d)
it is 1:2
|
|
Jay Goyal answered |
To find the ratio of length to breadth, we need to divide the length of the room by the breadth of the room.
Given:
Length of the room = 30 m
Breadth of the room = 20 m
To find the ratio of length to breadth, we divide the length by the breadth:
Ratio = Length / Breadth
Let's calculate:
Ratio = 30 m / 20 m
Simplifying the division, we get:
Ratio = 3/2
Thus, the ratio of length to breadth is 3:2, which corresponds to option B.
Explanation:
The ratio of length to breadth represents the relationship between the length and breadth of the room. In this case, the length is 30 m and the breadth is 20 m. When we divide the length by the breadth, we get a ratio of 3/2. This means that for every 3 units of length, there are 2 units of breadth. So, the ratio of length to breadth is 3:2.
Given:
Length of the room = 30 m
Breadth of the room = 20 m
To find the ratio of length to breadth, we divide the length by the breadth:
Ratio = Length / Breadth
Let's calculate:
Ratio = 30 m / 20 m
Simplifying the division, we get:
Ratio = 3/2
Thus, the ratio of length to breadth is 3:2, which corresponds to option B.
Explanation:
The ratio of length to breadth represents the relationship between the length and breadth of the room. In this case, the length is 30 m and the breadth is 20 m. When we divide the length by the breadth, we get a ratio of 3/2. This means that for every 3 units of length, there are 2 units of breadth. So, the ratio of length to breadth is 3:2.
If 14, 16, x and 24 are in proportion then find the value of x.- a)10.5
- b)21
- c)5
- d)None of these
Correct answer is option 'B'. Can you explain this answer?
If 14, 16, x and 24 are in proportion then find the value of x.
a)
10.5
b)
21
c)
5
d)
None of these
|
Praveen Kumar answered |
To find the value of x in the proportion 14 : 16 = x : 24, use cross-multiplication:
14 × 24 = 16 × x
336 = 16x
Divide both sides by 16:
x = 21
14 × 24 = 16 × x
336 = 16x
Divide both sides by 16:
x = 21
There are 45 persons working in an office. If the number of females is 25 and the remaining are males, find the ratio of the number of males to number of females.- a)it is 1:5
- b)it is 5:4
- c)it is 4:5
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
There are 45 persons working in an office. If the number of females is 25 and the remaining are males, find the ratio of the number of males to number of females.
a)
it is 1:5
b)
it is 5:4
c)
it is 4:5
d)
None of these
|
Kshitij Singh answered |
See,number of employees=45number of
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