What was the original price of a pen (in Taka) if it is bought for Tk. 100 at 20% discount?

What was the original price of a pen (in Taka) if it is bought for Tk. 100 at 20% discount?

A 80

B 120

C 150

D 250

Solution

Correct Answer: Option E

20% discount means (100 - 20) or, 80% of original price.

Thus,

80% of the original price is 100 tk

100% of the original price is 100/.8 tk

= 125 tk