Ratio of present ages of A and B is 4:8. After 6 years, the ratio becomes 7:11. Present age of A is? MCQ with Answer and Explanation

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Ratio of present ages of A and B is 4:8. After 6 years, the ratio becomes 7:11. Present age of A is?

A. 92 years

B. 97 years

C. 184 years

D. 87 years

Answer: Option A

Solution (By JKSSB Mock Tests)

Let ages 4k and 8k. Then (4k + 6)/(8k + 6) = 7/11. Solving gives k ≈ 23, age of A = 4*23 = 92.

This question belongs to: Maths Ratio and Proportion

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Question #1

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Two numbers are in ratio 8:12. Their difference is 61. What is their sum?

A. 320

B. 357

C. 452

D. 160

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Correct Answer: Option A

Explanation:
Numbers 8k, 12k. Difference |8-12|k = 61 ⇒ k = 15. Sum = (8+12)k ≈ 320.

This question belongs to: Maths Ratio and Proportion

Question #2

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Two numbers are in the ratio 13:11 and their sum is 287. Find the numbers.

A. 143 and 121

B. 158 and 106

C. 138 and 127

D. 286 and 242

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Correct Answer: Option A

Explanation:
Numbers = 13k and 11k. 13k + 11k = 287 ⇒ k = 11. Thus, numbers are 143 and 121.

This question belongs to: Maths Ratio and Proportion

Question #3

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Milk and water are in ratio 9:6 in a 275 L mixture. Quantity of milk?

A. 110 L

B. 165 L

C. 186 L

D. 330 L

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Correct Answer: Option B

Explanation:
Total parts = 15. Milk = [9 / (9+6)] × 275 = 165 L.

This question belongs to: Maths Ratio and Proportion

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