Ratio of present ages of A and B is 4:7. After 12 years, the ratio becomes 6:9. Present age of A is? MCQ with Answer and Explanation

Question

Share Report Error

Ratio of present ages of A and B is 4:7. After 12 years, the ratio becomes 6:9. Present age of A is?

A. 44 years

B. 49 years

C. 88 years

D. 40 years

Answer: Option A

Solution (By JKSSB Mock Tests)

Let ages 4k and 7k. Then (4k + 12)/(7k + 12) = 6/9. Solving gives k ≈ 11, age of A = 4*11 = 44.

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

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

A. 110 years

B. 50 years

C. 60 years

D. 55 years

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
Let ages 5k and 5k. Then (5k + 7)/(5k + 7) = 6/7. Solving gives k ≈ 11, age of A = 5*11 = 55.

This question belongs to: Maths Ratio and Proportion

Question #2

Share Report

Two numbers are in ratio 7:10. Their difference is 99. What is their sum?

A. 229

B. 482

C. 546

D. 459

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
Numbers 7k, 10k. Difference |7-10|k = 99 ⇒ k = 33. Sum = (7+10)k ≈ 459.

This question belongs to: Maths Ratio and Proportion

Question #3

Share Report

Ratio of present ages of A and B is 3:7. After 5 years, the ratio becomes 5:10. Present age of A is?

A. 72 years

B. 77 years

C. 65 years

D. 144 years

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option A

Explanation:
Let ages 3k and 7k. Then (3k + 5)/(7k + 5) = 5/10. Solving gives k ≈ 24, age of A = 3*24 = 72.

This question belongs to: Maths Ratio and Proportion

Explore All Ratio and Proportion MCQs