Price reduced 30% then increased 40%. Net change: MCQ with Answer and Explanation

Price reduced 30% then increased 40%. Net change:

A. 10% increase

B. 2% decrease

C. No change

D. 2% increase

Answer: Option B

0.7 × 1.4 = 0.98, 2% decrease.

This question belongs to: Maths Percentage

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Question #1 Report Error

To pass an exam, 40% is required. A student got 150 marks and failed by 30 marks. Maximum marks are:

A. 450

B. 500

C. 400

D. 550

Correct Answer: Option A

Explanation:
Pass marks = 150 + 30 = 180. 40% of Max = 180 → Max = 180/0.4 = 450.

This question belongs to: Maths Percentage

Question #2 Report Error

The population of a village is 5,000. It increases by 20% annually. What will be the population after 2 years?

A. 7200

B. 6000

C. 7000

D. 7400

Correct Answer: Option A

Explanation:
Population = 5000 * (1.20)^2 = 5000 * 1.44 = 7200.

This question belongs to: Maths Percentage

Question #3 Report Error

A number is decreased by 10% and then the new number is increased by 20%. If the resulting number is 540, find the original number.

A. 450

B. 480

C. 520

D. 500

Correct Answer: Option D

Explanation:
0.9 × 1.2 = 1.08, 1.08x = 540 → x = 500.

This question belongs to: Maths Percentage