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

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

A. 6:10:6

B. 6:9:6

C. 12:18:12

D. 5:9:7

Answer: Option B

Solution (By JKSSB Mock Tests)

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

This question belongs to: Maths Ratio and Proportion

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Question #1

If a:b = 5:8 and b:c = 8:12, then a:b:c = ?

A. 5:9:12

B. 5:8:12

C. 4:8:13

D. 10:16:24

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Correct Answer: Option B

Explanation:
Combine ratios: a:b = 5:8, b:c = 8:12 ⇒ a:b:c = 5:8:12.

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 5:10 and b:c = 10:6, then a:b:c = ?

A. 5:11:6

B. 4:10:7

C. 10:20:12

D. 5:10:6

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Correct Answer: Option D

Explanation:
Combine ratios: a:b = 5:10, b:c = 10:6 ⇒ a:b:c = 5:10:6.

This question belongs to: Maths Ratio and Proportion

Question #3

Milk and water are in ratio 9:3 in a 463 L mixture. Quantity of milk?

A. 347 L

B. 384 L

C. 116 L

D. 694 L

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Correct Answer: Option A

Explanation:
Total parts = 12. Milk = [9 / (9+3)] × 463 = 347 L.

This question belongs to: Maths Ratio and Proportion

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