If a:b = 6:7 and b:c = 7:10, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 6:7 and b:c = 7:10, then a:b:c = ?

A. 6:7:10

B. 12:14:20

C. 6:8:10

D. 5:7:11

Answer: Option A

Solution (By JKExamLibrary)

Combine ratios: a:b = 6:7, b:c = 7:10 ⇒ a:b:c = 6:7:10.

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 = 8:6 and b:c = 6:10, then a:b:c = ?

A. 8:7:10

B. 7:6:11

C. 8:6:10

D. 16:12:20

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Correct Answer: Option C

Explanation:
Combine ratios: a:b = 8:6, b:c = 6:10 ⇒ a:b:c = 8:6:10.

This question belongs to: Maths Ratio and Proportion

Question #2 Report Error

If a:b = 2:6 and b:c = 6:10, then a:b:c = ?

A. 1:6:11

B. 2:6:10

C. 2:7:10

D. 4:12:20

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Correct Answer: Option B

Explanation:
Combine ratios: a:b = 2:6, b:c = 6:10 ⇒ a:b:c = 2:6:10.

This question belongs to: Maths Ratio and Proportion

Question #3 Report Error

Milk and water are in ratio 8:2 in a 260 L mixture. Quantity of milk?

A. 52 L

B. 416 L

C. 208 L

D. 255 L

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Correct Answer: Option C

Explanation:
Total parts = 10. Milk = [8 / (8+2)] × 260 = 208 L.

This question belongs to: Maths Ratio and Proportion

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