Find the single equivalent discount for successive discounts of 10% and 20%. MCQ with Answer and Explanation

Question

Share Report Error

Find the single equivalent discount for successive discounts of 10% and 20%.

A. 30%

B. 28%

C. 25%

D. 32%

Answer: Option B

Solution (By JKSSB Mock Tests)

Equivalent discount = a + b - (ab / 100). 10 + 20 - (10 * 20 / 100) = 30 - 2 = 28%.

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

A candidate got 65% votes and won by 300 votes. Total votes polled:

A. 900

B. 1200

C. 800

D. 1000

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
Margin = 30% of total = 300 → total = 1000.

This question belongs to: Maths Percentage

Question #2

A person spends 10% of his salary on transport and 20% of the remaining on food. If he saves Rs. 3600, what is his total salary?

A. 5000

B. 4500

C. 6000

D. 4000

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option A

Explanation:
Let total salary = x. x * (90/100) * (80/100) = 3600. 0.72x = 3600. x = 5000.

This question belongs to: Maths Percentage

Question #3

The population of a town increases by 8% annually. If its present population is 2,33,280, what was it 2 years ago?

A. 1,80,000

B. 2,10,000

C. 1,90,000

D. 2,00,000

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
Pop 2 yrs ago = 233280 / (1.08)² = 233280 / 1.1664 = 200000.

This question belongs to: Maths Percentage

Explore All Percentage MCQs