Milk and water are in ratio 4:2 in a 368 L mixture. Quantity of milk? MCQ with Answer and Explanation
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Question #1
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Two numbers are in ratio 10:6. Their difference is 122. What is their sum?
Correct Answer: Option D
Explanation:
Numbers 10k, 6k. Difference |10-6|k = 122 ⇒ k = 30. Sum = (10+6)k ≈ 544.
Numbers 10k, 6k. Difference |10-6|k = 122 ⇒ k = 30. Sum = (10+6)k ≈ 544.
This question belongs to:
Maths
Ratio and Proportion
Question #2
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Ratio of present ages of A and B is 5:5. After 5 years, the ratio becomes 6:7. Present age of A is?
Correct Answer: Option C
Explanation:
Let ages 5k and 5k. Then (5k + 5)/(5k + 5) = 6/7. Solving gives k ≈ 9, age of A = 5*9 = 45.
Let ages 5k and 5k. Then (5k + 5)/(5k + 5) = 6/7. Solving gives k ≈ 9, age of A = 5*9 = 45.
This question belongs to:
Maths
Ratio and Proportion
Question #3
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If a:b = 2:5 and b:c = 5:10, then a:b:c = ?
Correct Answer: Option D
Explanation:
Combine ratios: a:b = 2:5, b:c = 5:10 ⇒ a:b:c = 2:5:10.
Combine ratios: a:b = 2:5, b:c = 5:10 ⇒ a:b:c = 2:5:10.
This question belongs to:
Maths
Ratio and Proportion
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