A shopkeeper sells shirts at ₹800 per shirt. He gives a 10% discount to all customers who make full payment in cash, and two shirts free to customers who buy 10 shirts at a time. If a customer wants to avail both types of discounts, which net effective discount can he avail? (The shopkeeper charges for 10 shirts but gives two additional shirts for the same price) This is just for clarity and not as part of the question. The language of the question is correct.