Question

shopkeeper marks his goods 30% above the cost price and give a discount of 15% on the Marked price what gain percent does he make

Answer 1

Gain percent =30% - 15% =15%

Answer 2

Best ides to get instant answer is put the cost of product to be Rs. 100/-
Market price = 130% of 100 = 130
Selling price = 130 -15% of 130 = 110.5
So net Profit = 110.5 - 100 = 10.5 Rs on Rs 100
So net percentage gain = 10.5%