A mixture contains 20% water. In 40 litres, amount of water is: MCQ with Answer and Explanation

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A mixture contains 20% water. In 40 litres, amount of water is:

A. 6 L

B. 10 L

C. 8 L

D. 12 L

Answer: Option C

Solution (By JKSSB Mock Tests)

20% of 40 = 8 litres.

This question belongs to: Maths Percentage

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Question #1

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A's salary is 20% less than B's. If B's salary is 5000, A's salary is:

A. 3500

B. 4200

C. 4000

D. 4800

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Correct Answer: Option C

Explanation:
A's salary = 5000 × 0.8 = 4000.

This question belongs to: Maths Percentage

Question #2

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If the price of petrol increases by 50%, by what percent must a car owner reduce consumption to keep expenditure constant?

A. 35%

B. 33.33%

C. 30%

D. 25%

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Correct Answer: Option B

Explanation:
New price 1.5, multiplier needed = 1/1.5 = 2/3, reduction = 1 - 2/3 = 33.33%.

This question belongs to: Maths Percentage

Question #3

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2% of 2% of 1000 is:

A. 0.04

B. 4

C. 0.004

D. 0.4

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Correct Answer: Option D

Explanation:
2% of 1000 = 20, 2% of 20 = 0.4.

This question belongs to: Maths Percentage

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