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

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

A. 8 L

B. 12 L

C. 10 L

D. 6 L

Answer: Option A

20% of 40 = 8 litres.

This question belongs to: Maths Percentage

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Question #1 Report Error

Price increased 15% then decreased 10%. Net change:

A. 5% increase

B. 5.5% increase

C. 4.5% increase

D. 3.5% increase

Correct Answer: Option D

Explanation:
1.15×0.9 = 1.035, increase 3.5%.

This question belongs to: Maths Percentage

Question #2 Report Error

Difference between 45% and 18% of a number is 1458. Number:

A. 5400

B. 5000

C. 5600

D. 5200

Correct Answer: Option A

Explanation:
27% of x = 1458 → x = 1458/0.27 = 5400.

This question belongs to: Maths Percentage

Question #3 Report Error

Population increases 5% annually. Present 1,00,000, after 2 years population:

A. 1,10,000

B. 1,10,250

C. 1,05,000

D. 1,12,000

Correct Answer: Option B

Explanation:
1,00,000 × 1.05² = 1,10,250.

This question belongs to: Maths Percentage