Ratio of present ages of A and B is 3:6. After 8 years, the ratio becomes 5:8. Present age of A is? MCQ with Answer and Explanation

Question

Share Report Error

Ratio of present ages of A and B is 3:6. After 8 years, the ratio becomes 5:8. Present age of A is?

A. 69 years

B. 138 years

C. 66 years

D. 74 years

Answer: Option A

Solution (By JKSSB Mock Tests)

Let ages 3k and 6k. Then (3k + 8)/(6k + 8) = 5/8. Solving gives k ≈ 23, age of A = 3*23 = 69.

This question belongs to: Maths Ratio and Proportion

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Ratio and Proportion Questions

Question #1

Share Report

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

A. 160

B. 357

C. 452

D. 320

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

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

Share Report

If a:b = 2:6 and b:c = 6:9, then a:b:c = ?

A. 1:6:10

B. 4:12:18

C. 2:6:9

D. 2:7:9

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option C

Explanation:
Combine ratios: a:b = 2:6, b:c = 6:9 ⇒ a:b:c = 2:6:9.

This question belongs to: Maths Ratio and Proportion

Question #3

Share Report

Two numbers are in the ratio 14:6 and their sum is 644. Find the numbers.

A. 448 and 192

B. 462 and 176

C. 896 and 384

D. 433 and 198

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option A

Explanation:
Numbers = 14k and 6k. 14k + 6k = 644 ⇒ k = 32. Thus, numbers are 448 and 192.

This question belongs to: Maths Ratio and Proportion

Explore All Ratio and Proportion MCQs