If a:b = 7:5 and b:c = 5:9, then a:b:c = ? MCQ with Answer and Explanation

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

A. 14:10:18

B. 7:5:9

C. 6:5:10

D. 7:6:9

Answer: Option B

Solution (By JKSSB Mock Tests)

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

This question belongs to: Maths Ratio and Proportion

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Question #1

If a:b = 8:8 and b:c = 8:5, then a:b:c = ?

A. 8:8:5

B. 16:16:10

C. 8:9:5

D. 7:8:6

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Correct Answer: Option A

Explanation:
Combine ratios: a:b = 8:8, b:c = 8:5 ⇒ a:b:c = 8:8:5.

This question belongs to: Maths Ratio and Proportion

Question #2

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

A. 2:8:8

B. 2:9:8

C. 1:8:9

D. 4:16:16

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Correct Answer: Option A

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

Question #3

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

A. 12:18:18

B. 6:10:9

C. 5:9:10

D. 6:9:9

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Correct Answer: Option D

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

This question belongs to: Maths Ratio and Proportion

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