Find the mean proportional between 24 and 32. MCQ with Answer and Explanation

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Find the mean proportional between 24 and 32.

A. 54

B. 27

C. 30

D. 56

Answer: Option B

Solution (By JKSSB Mock Tests)

Mean proportional = √(24 × 32) = √(768) = 27.

This question belongs to: Maths Ratio and Proportion

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Question #1

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Milk and water are in ratio 5:2 in a 305 L mixture. Quantity of milk?

A. 217 L

B. 434 L

C. 88 L

D. 265 L

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Correct Answer: Option A

Explanation:
Total parts = 7. Milk = [5 / (5+2)] × 305 = 217 L.

This question belongs to: Maths Ratio and Proportion

Question #2

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Milk and water are in ratio 8:5 in a 369 L mixture. Quantity of milk?

A. 227 L

B. 454 L

C. 142 L

D. 248 L

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Correct Answer: Option A

Explanation:
Total parts = 13. Milk = [8 / (8+5)] × 369 = 227 L.

This question belongs to: Maths Ratio and Proportion

Question #3

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

A. 6:7:7

B. 14:14:12

C. 7:7:6

D. 7:8:6

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Correct Answer: Option C

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

This question belongs to: Maths Ratio and Proportion

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