Question

A dealer marks his goods 25% above the cost price and allows 10% discount to his customers. What is his gain per cent?

Answer 1

let the CP be X rs.
marked price=125% of x
=125/100*X
=5/4x
discount=10/100*5/4x=1/8x
sp=(1/8x-5/4x)rs
=9/8x
gain%=9/8x-x=X/8
gain%=X/8*1/X*10012.5%