Ratio of present ages of A and B is 3:6. After 8 years, the ratio becomes 5:8. Present age of A is? MCQ with Answer and Explanation
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Question #1
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If a:b = 8:9 and b:c = 9:6, then a:b:c = ?
Correct Answer: Option A
Explanation:
Combine ratios: a:b = 8:9, b:c = 9:6 ⇒ a:b:c = 8:9:6.
Combine ratios: a:b = 8:9, b:c = 9:6 ⇒ a:b:c = 8:9:6.
This question belongs to:
Maths
Ratio and Proportion
Question #2
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Milk and water are in ratio 9:3 in a 408 L mixture. Quantity of milk?
Correct Answer: Option D
Explanation:
Total parts = 12. Milk = [9 / (9+3)] × 408 = 306 L.
Total parts = 12. Milk = [9 / (9+3)] × 408 = 306 L.
This question belongs to:
Maths
Ratio and Proportion
Question #3
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Two numbers are in the ratio 5:3 and their sum is 449. Find the numbers.
Correct Answer: Option D
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
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