If a:b = 3:6 and b:c = 6:4, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 3:6 and b:c = 6:4, then a:b:c = ?

A. 3:6:4

B. 6:12:8

C. 2:6:5

D. 3:7:4

Answer: Option A

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 3:6, b:c = 6:4 ⇒ a:b:c = 3:6:4.

This question belongs to: Maths Ratio and Proportion

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Question #1

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

A. 8:8:4

B. 8:7:4

C. 16:14:8

D. 7:7:5

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Correct Answer: Option B

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

This question belongs to: Maths Ratio and Proportion

Question #2

Milk and water are in ratio 6:5 in a 226 L mixture. Quantity of milk?

A. 123 L

B. 153 L

C. 246 L

D. 103 L

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Correct Answer: Option A

Explanation:
Total parts = 11. Milk = [6 / (6+5)] × 226 = 123 L.

This question belongs to: Maths Ratio and Proportion

Question #3

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

A. 8:3:4

B. 8:4:4

C. 16:6:8

D. 7:3:5

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Correct Answer: Option A

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

This question belongs to: Maths Ratio and Proportion

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