Ratio of present ages of A and B is 5:7. After 6 years, the ratio becomes 6:10. Present age of A is? MCQ with Answer and Explanation
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Question #1
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If a:b = 4:3 and b:c = 3:8, then a:b:c = ?
Correct Answer: Option A
Explanation:
Combine ratios: a:b = 4:3, b:c = 3:8 ⇒ a:b:c = 4:3:8.
Combine ratios: a:b = 4:3, b:c = 3:8 ⇒ a:b:c = 4:3:8.
This question belongs to:
Maths
Ratio and Proportion
Question #2
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Milk and water are in ratio 4:2 in a 368 L mixture. Quantity of milk?
Correct Answer: Option D
Explanation:
Total parts = 6. Milk = [4 / (4+2)] × 368 = 245 L.
Total parts = 6. Milk = [4 / (4+2)] × 368 = 245 L.
This question belongs to:
Maths
Ratio and Proportion
Question #3
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Two numbers are in ratio 11:5. Their difference is 105. What is their sum?
Correct Answer: Option A
Explanation:
Numbers 11k, 5k. Difference |11-5|k = 105 ⇒ k = 17. Sum = (11+5)k ≈ 320.
Numbers 11k, 5k. Difference |11-5|k = 105 ⇒ k = 17. Sum = (11+5)k ≈ 320.
This question belongs to:
Maths
Ratio and Proportion
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