The price of an article is reduced by 20% and then increased by 30%. Find the net change in the price. MCQ with Answer and Explanation

The price of an article is reduced by 20% and then increased by 30%. Find the net change in the price.

A. 4% decrease

B. 4% increase

C. 10% increase

D. No change

Answer: Option B

0.8 × 1.3 = 1.04, 4% increase.

This question belongs to: Maths Percentage

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Question #1 Report Error

If the length of a rectangle is increased by 20%, by what percentage must the width be decreased to maintain the same area?

A. 20%

B. 16.67%

C. 25%

D. 30%

Correct Answer: Option B

Explanation:
Required decrease = (20 / 120) * 100 = 16.67%.

This question belongs to: Maths Percentage

Question #2 Report Error

85% passed English, 75% Maths, 65% both. % failed both:

A. 8%

B. 12%

C. 5%

D. 10%

Correct Answer: Option C

Explanation:
Pass at least one = 85+75-65=95%, fail both = 5%.

This question belongs to: Maths Percentage

Question #3 Report Error

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

A. 4200

B. 4800

C. 4000

D. 3500

Correct Answer: Option C

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

This question belongs to: Maths Percentage