Two numbers are in the ratio 7:15 and their sum is 454. Find the numbers. MCQ with Answer and Explanation
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Question #1
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Milk and water are in ratio 9:6 in a 275 L mixture. Quantity of milk?
Correct Answer: Option A
Explanation:
Total parts = 15. Milk = [9 / (9+6)] × 275 = 165 L.
Total parts = 15. Milk = [9 / (9+6)] × 275 = 165 L.
This question belongs to:
Maths
Ratio and Proportion
Question #2
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Ratio of present ages of A and B is 3:8. After 10 years, the ratio becomes 4:10. Present age of A is?
Correct Answer: Option D
Explanation:
Let ages 3k and 8k. Then (3k + 10)/(8k + 10) = 4/10. Solving gives k ≈ 17, age of A = 3*17 = 51.
Let ages 3k and 8k. Then (3k + 10)/(8k + 10) = 4/10. Solving gives k ≈ 17, age of A = 3*17 = 51.
This question belongs to:
Maths
Ratio and Proportion
Question #3
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If a:b = 3:5 and b:c = 5:9, then a:b:c = ?
Correct Answer: Option B
Explanation:
Combine ratios: a:b = 3:5, b:c = 5:9 ⇒ a:b:c = 3:5:9.
Combine ratios: a:b = 3:5, b:c = 5:9 ⇒ a:b:c = 3:5:9.
This question belongs to:
Maths
Ratio and Proportion
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