If a:b = 5:8 and b:c = 8:6, then a:b:c = ? MCQ with Answer and Explanation

Question

Share Report Error

If a:b = 5:8 and b:c = 8:6, then a:b:c = ?

A. 10:16:12

B. 4:8:7

C. 5:8:6

D. 5:9:6

Answer: Option C

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 5:8, b:c = 8:6 ⇒ a:b:c = 5:8:6.

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 4:8. After 10 years, the ratio becomes 5:9. Present age of A is?

A. 96 years

B. 93 years

C. 192 years

D. 101 years

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option A

Explanation:
Let ages 4k and 8k. Then (4k + 10)/(8k + 10) = 5/9. Solving gives k ≈ 24, age of A = 4*24 = 96.

This question belongs to: Maths Ratio and Proportion

Question #2

Share Report

Ratio of present ages of A and B is 7:5. After 10 years, the ratio becomes 8:8. Present age of A is?

A. 127 years

B. 266 years

C. 138 years

D. 133 years

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
Let ages 7k and 5k. Then (7k + 10)/(5k + 10) = 8/8. Solving gives k ≈ 19, age of A = 7*19 = 133.

This question belongs to: Maths Ratio and Proportion

Question #3

Share Report

Two numbers are in ratio 7:12. Their difference is 101. What is their sum?

A. 334

B. 304

C. 152

D. 423

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option B

Explanation:
Numbers 7k, 12k. Difference |7-12|k = 101 ⇒ k = 20. Sum = (7+12)k ≈ 304.

This question belongs to: Maths Ratio and Proportion

Explore All Ratio and Proportion MCQs