Ratio of present ages of A and B is 7:6. After 11 years, the ratio becomes 9:9. Present age of A is? MCQ with Answer and Explanation

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Ratio of present ages of A and B is 7:6. After 11 years, the ratio becomes 9:9. Present age of A is?

A. 95 years

B. 98 years

C. 196 years

D. 103 years

Answer: Option B

Solution (By JKSSB Mock Tests)

Let ages 7k and 6k. Then (7k + 11)/(6k + 11) = 9/9. Solving gives k ≈ 14, age of A = 7*14 = 98.

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1

Find the mean proportional between 25 and 32.

A. 28

B. 31

C. 57

D. 56

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Correct Answer: Option A

Explanation:
Mean proportional = √(25 × 32) = √(800) = 28.

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 5:8 and b:c = 8:5, then a:b:c = ?

A. 5:9:5

B. 10:16:10

C. 5:8:5

D. 4:8:6

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Correct Answer: Option C

Explanation:
Combine ratios: a:b = 5:8, b:c = 8:5 ⇒ a:b:c = 5:8:5.

This question belongs to: Maths Ratio and Proportion

Question #3

Ratio of present ages of A and B is 4:8. After 10 years, the ratio becomes 5:9. Present age of A is?

A. 192 years

B. 96 years

C. 101 years

D. 93 years

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Correct Answer: Option B

Explanation:
Let ages 4k and 8k. Then (4k + 10)/(8k + 10) = 5/9. Solving gives k ≈ 24, age of A = 4*24 = 96.

This question belongs to: Maths Ratio and Proportion

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