Two numbers are in ratio 6:12. Their difference is 91. What is their sum? MCQ with Answer and Explanation
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Question #1
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Find the mean proportional between 11 and 38.
Correct Answer: Option D
Explanation:
Mean proportional = √(11 × 38) = √(418) = 20.
Mean proportional = √(11 × 38) = √(418) = 20.
This question belongs to:
Maths
Ratio and Proportion
Question #2
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If a:b = 4:3 and b:c = 3:12, then a:b:c = ?
Correct Answer: Option A
Explanation:
Combine ratios: a:b = 4:3, b:c = 3:12 ⇒ a:b:c = 4:3:12.
Combine ratios: a:b = 4:3, b:c = 3:12 ⇒ a:b:c = 4:3:12.
This question belongs to:
Maths
Ratio and Proportion
Question #3
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Two numbers are in the ratio 15:12 and their sum is 319. Find the numbers.
Correct Answer: Option B
Explanation:
Numbers = 15k and 12k. 15k + 12k = 319 ⇒ k = 11. Thus, numbers are 165 and 132.
Numbers = 15k and 12k. 15k + 12k = 319 ⇒ k = 11. Thus, numbers are 165 and 132.
This question belongs to:
Maths
Ratio and Proportion
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