A shopkeeper marks his goods 30% above the cost price and offers a discount of 10% on the marked price. What is his gain percent?

Question: A shopkeeper marks his goods 30% above the cost price and offers a discount of 10% on the marked price. What is his gain percent?Solution: Let,the cost price (CP) be Tk. 100Marked Price = 30% more than cost price= 100 + 30= 130 Tk.Discount = 10% of 130= (10/100) ​× 130=13 Tk.Selling Price (SP)= 130 - 13 = 117 Tk.∴ Profit = SP - CP = 117 - 100 = 17 Tk.∴ Gain percent = 17%