UGC-NET Dec 2019 Part-1

Question 7

What is the exact equivalent discount of three successive discounts of 10%, 15% and 20% by sale of an article?

A	35.8%
B	38.5%
C	35.5%
D	38.8%

Mathematical-ReasoningProfit-and-Loss

Question 7 Explanation:

Single equivalent discount for successive discounts of 10% and 15%.
= (10+15- (15*10)/100)%
= 23.5%
Single equivalent discount for 23.5% and 20%
=(23.5+20-(23.5*20)/100)%
=38.8%

Correct Answer: D

Question 7 Explanation:

Single equivalent discount for successive discounts of 10% and 15%.
= (10+15- (15*10)/100)%
= 23.5%
Single equivalent discount for 23.5% and 20%
=(23.5+20-(23.5*20)/100)%
=38.8%