If a:b = 4:6 and b:c = 6:9, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 4:6 and b:c = 6:9, then a:b:c = ?

A. 4:6:9

B. 4:7:9

C. 3:6:10

D. 8:12:18

Answer: Option A

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 4:6, b:c = 6:9 ⇒ a:b:c = 4:6:9.

This question belongs to: Maths Ratio and Proportion

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Question #1

If a:b = 6:10 and b:c = 10:8, then a:b:c = ?

A. 6:11:8

B. 12:20:16

C. 5:10:9

D. 6:10:8

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Correct Answer: Option D

Explanation:
Combine ratios: a:b = 6:10, b:c = 10:8 ⇒ a:b:c = 6:10:8.

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 4:7 and b:c = 7:8, then a:b:c = ?

A. 3:7:9

B. 4:7:8

C. 8:14:16

D. 4:8:8

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Correct Answer: Option B

Explanation:
Combine ratios: a:b = 4:7, b:c = 7:8 ⇒ a:b:c = 4:7:8.

This question belongs to: Maths Ratio and Proportion

Question #3

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

A. 6:16:20

B. 2:8:11

C. 3:9:10

D. 3:8:10

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Correct Answer: Option D

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

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