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

A. 81 years

B. 152 years

C. 68 years

D. 76 years

Answer: Option D

Solution (By JKSSB Mock Tests)

Let ages 4k and 5k. Then (4k + 5)/(5k + 5) = 5/8. Solving gives k ≈ 19, age of A = 4*19 = 76.

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 the ratio 13:5 and their sum is 464. Find the numbers.

A. 325 and 125

B. 314 and 136

C. 341 and 114

D. 650 and 250

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option A

Explanation:
Numbers = 13k and 5k. 13k + 5k = 464 ⇒ k = 25. Thus, numbers are 325 and 125.

This question belongs to: Maths Ratio and Proportion

Question #2

Share Report

Two numbers are in the ratio 6:5 and their sum is 616. Find the numbers.

A. 328 and 295

B. 336 and 280

C. 357 and 269

D. 672 and 560

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option B

Explanation:
Numbers = 6k and 5k. 6k + 5k = 616 ⇒ k = 56. Thus, numbers are 336 and 280.

This question belongs to: Maths Ratio and Proportion

Question #3

Share Report

If a:b = 3:4 and b:c = 4:5, then a:b:c = ?

A. 6:8:10

B. 3:5:5

C. 3:4:5

D. 2:4:6

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option C

Explanation:
Combine ratios: a:b = 3:4, b:c = 4:5 ⇒ a:b:c = 3:4:5.

This question belongs to: Maths Ratio and Proportion

Explore All Ratio and Proportion MCQs