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All questions of Proportion for Class 10 Exam
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.
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
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
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