Question

A trader marked his goods at 5% above its c.p . What is the rate of discounts offered by him if he sells them at a loss of 10%

Answer 1

it is 15%
He has marked it as CP+5%
He is selling them at CP-10%
(CP+5%)-(CP-10%)
Then remove the brackets
= CP+5%-CP+10%
Then remove the opposites
5%+10%= 15%