Two numbers are in the ratio 7:15 and their sum is 349. Find the numbers. MCQ with Answer and Explanation
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Question #1
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If a:b = 5:9 and b:c = 9:6, then a:b:c = ?
Correct Answer: Option B
Explanation:
Combine ratios: a:b = 5:9, b:c = 9:6 ⇒ a:b:c = 5:9:6.
Combine ratios: a:b = 5:9, b:c = 9:6 ⇒ a:b:c = 5:9:6.
This question belongs to:
Maths
Ratio and Proportion
Question #2
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Two numbers are in the ratio 5:3 and their sum is 449. Find the numbers.
Correct Answer: Option B
Explanation:
Numbers = 5k and 3k. 5k + 3k = 449 ⇒ k = 56. Thus, numbers are 280 and 168.
Numbers = 5k and 3k. 5k + 3k = 449 ⇒ k = 56. Thus, numbers are 280 and 168.
This question belongs to:
Maths
Ratio and Proportion
Question #3
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Find the mean proportional between 32 and 50.
Correct Answer: Option C
Explanation:
Mean proportional = √(32 × 50) = √(1600) = 40.
Mean proportional = √(32 × 50) = √(1600) = 40.
This question belongs to:
Maths
Ratio and Proportion
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