If a:b = 8:3 and b:c = 3:6, then a:b:c = ? MCQ with Answer and Explanation

Question

Share Report Error

If a:b = 8:3 and b:c = 3:6, then a:b:c = ?

A. 7:3:7

B. 8:4:6

C. 8:3:6

D. 16:6:12

Answer: Option C

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 8:3, b:c = 3:6 ⇒ a:b:c = 8:3:6.

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 7:8. After 11 years, the ratio becomes 10:10. Present age of A is?

A. 156 years

B. 322 years

C. 161 years

D. 166 years

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option C

Explanation:
Let ages 7k and 8k. Then (7k + 11)/(8k + 11) = 10/10. Solving gives k ≈ 23, age of A = 7*23 = 161.

This question belongs to: Maths Ratio and Proportion

Question #2

Share Report

If a:b = 7:5 and b:c = 5:9, then a:b:c = ?

A. 7:6:9

B. 14:10:18

C. 7:5:9

D. 6:5:10

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option C

Explanation:
Combine ratios: a:b = 7:5, b:c = 5:9 ⇒ a:b:c = 7:5:9.

This question belongs to: Maths Ratio and Proportion

Question #3

Share Report

If a:b = 5:6 and b:c = 6:7, then a:b:c = ?

A. 10:12:14

B. 5:7:7

C. 5:6:7

D. 4:6:8

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option C

Explanation:
Combine ratios: a:b = 5:6, b:c = 6:7 ⇒ a:b:c = 5:6:7.

This question belongs to: Maths Ratio and Proportion

Explore All Ratio and Proportion MCQs