Ratio of present ages of A and B is 6:5. After 5 years, the ratio becomes 7:6. Present age of A is? MCQ with Answer and Explanation

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Ratio of present ages of A and B is 6:5. After 5 years, the ratio becomes 7:6. Present age of A is?

A. 108 years

B. 59 years

C. 54 years

D. 48 years

Answer: Option C

Solution (By JKSSB Mock Tests)

Let ages 6k and 5k. Then (6k + 5)/(5k + 5) = 7/6. Solving gives k ≈ 9, age of A = 6*9 = 54.

This question belongs to: Maths Ratio and Proportion

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Question #1

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Two numbers are in ratio 4:12. Their difference is 122. What is their sum?

A. 244

B. 338

C. 104

D. 208

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Correct Answer: Option D

Explanation:
Numbers 4k, 12k. Difference |4-12|k = 122 ⇒ k = 15. Sum = (4+12)k ≈ 208.

This question belongs to: Maths Ratio and Proportion

Question #2

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Milk and water are in ratio 9:4 in a 207 L mixture. Quantity of milk?

A. 143 L

B. 286 L

C. 64 L

D. 176 L

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Correct Answer: Option A

Explanation:
Total parts = 13. Milk = [9 / (9+4)] × 207 = 143 L.

This question belongs to: Maths Ratio and Proportion

Question #3

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If a:b = 6:5 and b:c = 5:4, then a:b:c = ?

A. 6:5:4

B. 12:10:8

C. 6:6:4

D. 5:5:5

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Correct Answer: Option A

Explanation:
Combine ratios: a:b = 6:5, b:c = 5:4 ⇒ a:b:c = 6:5:4.

This question belongs to: Maths Ratio and Proportion

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