In 100 L mixture, milk:water = 3:2. Water added to make ratio 1:1: MCQ with Answer and Explanation

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In 100 L mixture, milk:water = 3:2. Water added to make ratio 1:1:

A. 25 L

B. 40 L

C. 20 L

D. 30 L

Answer: Option C

Solution (By JKSSB Mock Tests)

Milk=60 L, water=40 L. For milk:water = 1:1, water=60 L, add 20 L.

This question belongs to: Maths Percentage

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Question #1

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A man saves 20% of his monthly income. If his monthly expenditure increases by 25% and his income increases by 30%, his savings increase by what percent?

A. 50%

B. 45%

C. 40%

D. 55%

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Correct Answer: Option A

Explanation:
Let income=100, exp=80, sav=20. New inc=130, new exp=80×1.25=100, sav=30. Increase = 10, % = (10/20)×100 = 50%.

This question belongs to: Maths Percentage

Question #2

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Radius of circle decreased 20%. Area decreases by:

A. 36%

B. 32%

C. 38%

D. 34%

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Correct Answer: Option A

Explanation:
Area multiplier = 0.8² = 0.64, decrease 36%.

This question belongs to: Maths Percentage

Question #3

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A student divided a number by 2 instead of multiplying it by 2. What is the percentage error?

A. 50%

B. 60%

C. 100%

D. 75%

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Correct Answer: Option D

Explanation:
True value = 2x. False value = x/2 = 0.5x. Error = 1.5x. % Error = (1.5 / 2) * 100 = 75%.

This question belongs to: Maths Percentage

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