In a mixture of 120 litres, the ratio of milk and water is 2:1. How much water is added to change the ratio to 1:2? MCQ with Answer and Explanation

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In a mixture of 120 litres, the ratio of milk and water is 2:1. How much water is added to change the ratio to 1:2?

A. 110 L

B. 130 L

C. 100 L

D. 120 L

Answer: Option D

Solution (By JKSSB Mock Tests)

Milk=80, water=40. For 1:2, water=160, add 120 L.

This question belongs to: Maths Percentage

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Population 12000, first year +5%, second year -5%. Population after 2 years:

A. 12030

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C. 11940

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Correct Answer: Option D

Explanation:
12000×1.05×0.95 = 11970.

This question belongs to: Maths Percentage

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A student got 360 marks out of 500. Percentage is:

A. 72%

B. 68%

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Correct Answer: Option A

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(360/500)×100 = 72%.

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A trader marks his goods 80% above cost price and gives a discount of 40%. Find his gain percent.

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Correct Answer: Option B

Explanation:
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