A tradesman marks his goods at 26% above the cost price. He allows his customer a discount of 12% on the marked price. His profit per cent is:

10.88%

        CP                  MP

Let   100                 126

Discount = 12% on marked price means 88% of the MP

So , Selling price = 126 × \(\frac{88}{100}\) = 110.88

So the profit percentage = 110.88 - 100 = 10.88%