If a:b = 5:10 and b:c = 10:10, then a:b:c = ? MCQ with Answer and Explanation

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

A. 5:11:10

B. 4:10:11

C. 10:20:20

D. 5:10:10

Answer: Option D

Solution (By JKSSB Mock Tests)

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

This question belongs to: Maths Ratio and Proportion

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Question #1

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

A. 2:11:12

B. 4:20:24

C. 1:10:13

D. 2:10:12

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Correct Answer: Option D

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

This question belongs to: Maths Ratio and Proportion

Question #2

Milk and water are in ratio 7:7 in a 233 L mixture. Quantity of milk?

A. 232 L

B. 138 L

C. 117 L

D. 116 L

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Correct Answer: Option D

Explanation:
Total parts = 14. Milk = [7 / (7+7)] × 233 = 116 L.

This question belongs to: Maths Ratio and Proportion

Question #3

If a:b = 5:8 and b:c = 8:5, then a:b:c = ?

A. 10:16:10

B. 4:8:6

C. 5:8:5

D. 5:9:5

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Correct Answer: Option C

Explanation:
Combine ratios: a:b = 5:8, b:c = 8:5 ⇒ a:b:c = 5:8:5.

This question belongs to: Maths Ratio and Proportion

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