If a:b = 2:3 and b:c = 3:10, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 2:3 and b:c = 3:10, then a:b:c = ?

A. 2:4:10

B. 4:6:20

C. 2:3:10

D. 1:3:11

Answer: Option C

Solution (By JKExamLibrary)

Combine ratios: a:b = 2:3, b:c = 3:10 ⇒ a:b:c = 2:3:10.

This question belongs to: Maths Ratio and Proportion

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Question #1 Report Error

If a:b = 5:10 and b:c = 10:4, then a:b:c = ?

A. 5:10:4

B. 4:10:5

C. 10:20:8

D. 5:11:4

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Correct Answer: Option A

Explanation:
Combine ratios: a:b = 5:10, b:c = 10:4 ⇒ a:b:c = 5:10:4.

This question belongs to: Maths Ratio and Proportion

Question #2 Report Error

Milk and water are in ratio 7:6 in a 528 L mixture. Quantity of milk?

A. 334 L

B. 568 L

C. 244 L

D. 284 L

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Correct Answer: Option D

Explanation:
Total parts = 13. Milk = [7 / (7+6)] × 528 = 284 L.

This question belongs to: Maths Ratio and Proportion

Question #3 Report Error

If a:b = 3:4 and b:c = 4:7, then a:b:c = ?

A. 2:4:8

B. 3:4:7

C. 6:8:14

D. 3:5:7

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Correct Answer: Option B

Explanation:
Combine ratios: a:b = 3:4, b:c = 4:7 ⇒ a:b:c = 3:4:7.

This question belongs to: Maths Ratio and Proportion

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