If a:b = 6:5 and b:c = 5:4, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 6:5 and b:c = 5:4, then a:b:c = ?

A. 6:5:4

B. 12:10:8

C. 6:6:4

D. 5:5:5

Answer: Option A

Solution (By JKExamLibrary)

Combine ratios: a:b = 6:5, b:c = 5:4 ⇒ a:b:c = 6:5:4.

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1 Report Error

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

A. 8:9:8

B. 8:10:8

C. 16:18:16

D. 7:9:9

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Correct Answer: Option A

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

This question belongs to: Maths Ratio and Proportion

Question #2 Report Error

Milk and water are in ratio 8:4 in a 505 L mixture. Quantity of milk?

A. 379 L

B. 169 L

C. 336 L

D. 672 L

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Correct Answer: Option C

Explanation:
Total parts = 12. Milk = [8 / (8+4)] × 505 = 336 L.

This question belongs to: Maths Ratio and Proportion

Question #3 Report Error

If a:b = 3:5 and b:c = 5:6, then a:b:c = ?

A. 3:6:6

B. 6:10:12

C. 2:5:7

D. 3:5:6

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Correct Answer: Option D

Explanation:
Combine ratios: a:b = 3:5, b:c = 5:6 ⇒ a:b:c = 3:5:6.

This question belongs to: Maths Ratio and Proportion

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