Ratio of present ages of A and B is 7:6. After 11 years, the ratio becomes 9:9. Present age of A is? MCQ with Answer and Explanation
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Question #1
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If a:b = 5:5 and b:c = 5:4, then a:b:c = ?
Correct Answer: Option A
Explanation:
Combine ratios: a:b = 5:5, b:c = 5:4 ⇒ a:b:c = 5:5:4.
Combine ratios: a:b = 5:5, b:c = 5:4 ⇒ a:b:c = 5:5:4.
This question belongs to:
Maths
Ratio and Proportion
Question #2
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Two numbers are in ratio 8:5. Their difference is 125. What is their sum?
Correct Answer: Option C
Explanation:
Numbers 8k, 5k. Difference |8-5|k = 125 ⇒ k = 41. Sum = (8+5)k ≈ 403.
Numbers 8k, 5k. Difference |8-5|k = 125 ⇒ k = 41. Sum = (8+5)k ≈ 403.
This question belongs to:
Maths
Ratio and Proportion
Question #3
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Two numbers are in the ratio 13:4 and their sum is 771. Find the numbers.
Correct Answer: Option A
Explanation:
Numbers = 13k and 4k. 13k + 4k = 771 ⇒ k = 45. Thus, numbers are 585 and 180.
Numbers = 13k and 4k. 13k + 4k = 771 ⇒ k = 45. Thus, numbers are 585 and 180.
This question belongs to:
Maths
Ratio and Proportion
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