If a:b = 3:6 and b:c = 6:12, then a:b:c = ? MCQ with Answer and Explanation

Question

Share Report Error

If a:b = 3:6 and b:c = 6:12, then a:b:c = ?

A. 3:6:12

B. 2:6:13

C. 3:7:12

D. 6:12:24

Answer: Option A

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 3:6, b:c = 6:12 ⇒ a:b:c = 3:6:12.

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

If a:b = 3:8 and b:c = 8:10, then a:b:c = ?

A. 3:9:10

B. 6:16:20

C. 3:8:10

D. 2:8:11

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option C

Explanation:
Combine ratios: a:b = 3:8, b:c = 8:10 ⇒ a:b:c = 3:8:10.

This question belongs to: Maths Ratio and Proportion

Question #2

Two numbers are in the ratio 11:9 and their sum is 682. Find the numbers.

A. 374 and 306

B. 399 and 285

C. 748 and 612

D. 367 and 312

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option A

Explanation:
Numbers = 11k and 9k. 11k + 9k = 682 ⇒ k = 34. Thus, numbers are 374 and 306.

This question belongs to: Maths Ratio and Proportion

Question #3

If a:b = 2:8 and b:c = 8:8, then a:b:c = ?

A. 4:16:16

B. 2:9:8

C. 1:8:9

D. 2:8:8

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
Combine ratios: a:b = 2:8, b:c = 8:8 ⇒ a:b:c = 2:8:8.

This question belongs to: Maths Ratio and Proportion

Explore All Ratio and Proportion MCQs