If a:b = 2:10 and b:c = 10:12, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 2:10 and b:c = 10:12, then a:b:c = ?

A. 1:10:13

B. 2:11:12

C. 2:10:12

D. 4:20:24

Answer: Option C

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 2:10, b:c = 10:12 ⇒ a:b:c = 2:10:12.

This question belongs to: Maths Ratio and Proportion

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Question #1

If a:b = 3:7 and b:c = 7:11, then a:b:c = ?

A. 6:14:22

B. 2:7:12

C. 3:7:11

D. 3:8:11

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Correct Answer: Option C

Explanation:
Combine ratios: a:b = 3:7, b:c = 7:11 ⇒ a:b:c = 3:7:11.

This question belongs to: Maths Ratio and Proportion

Question #2

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

A. 7:4:4

B. 6:4:5

C. 7:5:4

D. 14:8:8

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Correct Answer: Option A

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

This question belongs to: Maths Ratio and Proportion

Question #3

Milk and water are in ratio 7:2 in a 578 L mixture. Quantity of milk?

A. 898 L

B. 129 L

C. 449 L

D. 473 L

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Correct Answer: Option C

Explanation:
Total parts = 9. Milk = [7 / (7+2)] × 578 = 449 L.

This question belongs to: Maths Ratio and Proportion

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