If a:b = 8:10 and b:c = 10:12, then a:b:c = ? MCQ with Answer and Explanation
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Question #1
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Find the mean proportional between 24 and 31.
Correct Answer: Option C
Explanation:
Mean proportional = √(24 × 31) = √(744) = 27.
Mean proportional = √(24 × 31) = √(744) = 27.
This question belongs to:
Maths
Ratio and Proportion
Question #2
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If a:b = 3:6 and b:c = 6:7, then a:b:c = ?
Correct Answer: Option A
Explanation:
Combine ratios: a:b = 3:6, b:c = 6:7 ⇒ a:b:c = 3:6:7.
Combine ratios: a:b = 3:6, b:c = 6:7 ⇒ a:b:c = 3:6:7.
This question belongs to:
Maths
Ratio and Proportion
Question #3
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Milk and water are in ratio 9:3 in a 463 L mixture. Quantity of milk?
Correct Answer: Option C
Explanation:
Total parts = 12. Milk = [9 / (9+3)] × 463 = 347 L.
Total parts = 12. Milk = [9 / (9+3)] × 463 = 347 L.
This question belongs to:
Maths
Ratio and Proportion
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