A number is first increased by 20% and then decreased by 20%. What is the net percentage change in the number? MCQ with Answer and Explanation

Question

Share Report Error

A number is first increased by 20% and then decreased by 20%. What is the net percentage change in the number?

A. 10% decrease

B. 4% increase

C. No change

D. 4% decrease

Answer: Option D

Solution (By JKSSB Mock Tests)

Let the number be 100. After 20% increase, it becomes 120. After 20% decrease, it becomes 120 * 0.8 = 96. Net change = 100 - 96 = 4% decrease.

This question belongs to: Maths Percentage

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Percentage Questions

Question #1

Share Report

A student scored 45% marks in the first paper and 55% in the second paper. If the maximum marks in each paper are equal and he scored 250 marks in total, what are the maximum marks of each paper?

A. 225

B. 250

C. 200

D. 275

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option B

Explanation:
Let max per paper = M. 0.45M + 0.55M = 1.0M = 250 → M = 250.

This question belongs to: Maths Percentage

Question #2

Share Report

A man's monthly salary is Rs. 20000. He spends 20% on rent and 30% of the remaining on food. How much does he save?

A. 12000

B. 14000

C. 10000

D. 11200

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
Remaining after rent = 80% of 20000 = 16000. Spent on food = 30% of 16000 = 4800. Savings = 16000 - 4800 = 11200.

This question belongs to: Maths Percentage

Question #3

Share Report

A shopkeeper marks his goods 40% above cost price and allows a discount of 25%. Find his gain percent.

A. 5%

B. 6%

C. 3%

D. 4%

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option A

Explanation:
CP=100, MP=140, SP=140×0.75=105, gain 5%.

This question belongs to: Maths Percentage

Explore All Percentage MCQs