Two numbers are in ratio 7:4. Their difference is 73. What is their sum? MCQ with Answer and Explanation
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Question #1
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Two numbers are in ratio 7:4. Their difference is 53. What is their sum?
Correct Answer: Option D
Explanation:
Numbers 7k, 4k. Difference |7-4|k = 53 ⇒ k = 17. Sum = (7+4)k ≈ 418.
Numbers 7k, 4k. Difference |7-4|k = 53 ⇒ k = 17. Sum = (7+4)k ≈ 418.
This question belongs to:
Maths
Ratio and Proportion
Question #2
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If a:b = 6:9 and b:c = 9:11, then a:b:c = ?
Correct Answer: Option B
Explanation:
Combine ratios: a:b = 6:9, b:c = 9:11 ⇒ a:b:c = 6:9:11.
Combine ratios: a:b = 6:9, b:c = 9:11 ⇒ a:b:c = 6:9:11.
This question belongs to:
Maths
Ratio and Proportion
Question #3
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If a:b = 6:3 and b:c = 3:4, then a:b:c = ?
Correct Answer: Option D
Explanation:
Combine ratios: a:b = 6:3, b:c = 3:4 ⇒ a:b:c = 6:3:4.
Combine ratios: a:b = 6:3, b:c = 3:4 ⇒ a:b:c = 6:3:4.
This question belongs to:
Maths
Ratio and Proportion
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