If a:b = 6:7 and b:c = 7:12, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 6:7 and b:c = 7:12, then a:b:c = ?

A. 6:7:12

B. 5:7:13

C. 12:14:24

D. 6:8:12

Answer: Option A

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 6:7, b:c = 7:12 ⇒ a:b:c = 6:7:12.

This question belongs to: Maths Ratio and Proportion

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Question #1

If a:b = 8:6 and b:c = 6:9, then a:b:c = ?

A. 8:6:9

B. 16:12:18

C. 7:6:10

D. 8:7:9

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Correct Answer: Option A

Explanation:
Combine ratios: a:b = 8:6, b:c = 6:9 ⇒ a:b:c = 8:6:9.

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 5:9 and b:c = 9:10, then a:b:c = ?

A. 5:10:10

B. 10:18:20

C. 4:9:11

D. 5:9:10

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Correct Answer: Option D

Explanation:
Combine ratios: a:b = 5:9, b:c = 9:10 ⇒ a:b:c = 5:9:10.

This question belongs to: Maths Ratio and Proportion

Question #3

If a:b = 3:8 and b:c = 8:4, then a:b:c = ?

A. 2:8:5

B. 3:9:4

C. 6:16:8

D. 3:8:4

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Correct Answer: Option D

Explanation:
Combine ratios: a:b = 3:8, b:c = 8:4 ⇒ a:b:c = 3:8:4.

This question belongs to: Maths Ratio and Proportion

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