Question

A trader marks his goods 20% above the cost price and allows a discount of 15% of it. Find his gain per cent.

Answer 1

Let CP = Rs 100

MP = Rs 120 [20% above CP]

Discount = 15%

ie = 15% of MP

$=\frac{15}{100}\times 120=RS18$

SP = MP- Discount

$=(120-18)rs$

$=Rs102$

gain % $=\frac{gain}{CP}\Rightarrow 100$

$=\frac{2}{100}\times 100$

$=2$ %