Two numbers are in the ratio 15:9 and their sum is 542. Find the numbers. 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 = 4:7 and b:c = 7:10, then a:b:c = ?
Correct Answer: Option D
Explanation:
Combine ratios: a:b = 4:7, b:c = 7:10 ⇒ a:b:c = 4:7:10.
Combine ratios: a:b = 4:7, b:c = 7:10 ⇒ a:b:c = 4:7:10.
This question belongs to:
Maths
Ratio and Proportion
Question #3
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Two numbers are in the ratio 14:7 and their sum is 130. Find the numbers.
Correct Answer: Option C
Explanation:
Numbers = 14k and 7k. 14k + 7k = 130 ⇒ k = 6. Thus, numbers are 84 and 42.
Numbers = 14k and 7k. 14k + 7k = 130 ⇒ k = 6. Thus, numbers are 84 and 42.
This question belongs to:
Maths
Ratio and Proportion
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