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

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

A. 5:9:5

B. 12:18:8

C. 6:10:4

D. 6:9:4

Answer: Option D

Solution (By JKSSB Mock Tests)

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

This question belongs to: Maths Ratio and Proportion

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Question #1

If a:b = 8:9 and b:c = 9:7, then a:b:c = ?

A. 16:18:14

B. 8:10:7

C. 7:9:8

D. 8:9:7

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Correct Answer: Option D

Explanation:
Combine ratios: a:b = 8:9, b:c = 9:7 ⇒ a:b:c = 8:9:7.

This question belongs to: Maths Ratio and Proportion

Question #2

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

A. 5:7:13

B. 6:8:12

C. 6:7:12

D. 12:14:24

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Correct Answer: Option C

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

This question belongs to: Maths Ratio and Proportion

Question #3

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

A. 7:7:9

B. 14:14:18

C. 7:8:9

D. 6:7:10

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Correct Answer: Option A

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

This question belongs to: Maths Ratio and Proportion

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