Find the mean proportional between 29 and 50. MCQ with Answer and Explanation
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Question #1
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Find the mean proportional between 15 and 13.
Correct Answer: Option D
Explanation:
Mean proportional = √(15 × 13) = √(195) = 13.
Mean proportional = √(15 × 13) = √(195) = 13.
This question belongs to:
Maths
Ratio and Proportion
Question #2
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Find the mean proportional between 30 and 36.
Correct Answer: Option A
Explanation:
Mean proportional = √(30 × 36) = √(1080) = 32.
Mean proportional = √(30 × 36) = √(1080) = 32.
This question belongs to:
Maths
Ratio and Proportion
Question #3
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Two numbers are in ratio 4:9. Their difference is 73. What is their sum?
Correct Answer: Option C
Explanation:
Numbers 4k, 9k. Difference |4-9|k = 73 ⇒ k = 14. Sum = (4+9)k ≈ 520.
Numbers 4k, 9k. Difference |4-9|k = 73 ⇒ k = 14. Sum = (4+9)k ≈ 520.
This question belongs to:
Maths
Ratio and Proportion
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