The price of a sweater was slashed from Rs. 960 to Rs. 816 by a shopkeeper in the winter season. Find the rate of discount given by him.
Market Price = Rs.960
Selling Price = Rs.816
Discount = Market Price – Selling Price
= 960 - 816
=Rs.144
Discount % = (Discount/Market Price) × 100
= (144/960) × 100
= 15%