Three shops sell the same items at the same price. The shops offer deals as follows: Shop A: 'Buy 1 and get 1 free', Shop B: 'Buy 2 and get 1 free', Shop C: 'Buy 3 and get 1 free'. (i) If the price of one item is ₹100, what is the effective price per item in each shop? Arrange the shops from cheapest to costliest. (ii) For each shop, calculate the percentage discount on the items. (iii) Suppose you need 4 items. Which shop would you choose? Why?
Shop A: ₹50/item, Shop B: ₹66.67/item, Shop C: ₹75/item. Order: A < B < C
Shop A: 50%, Shop B: 33.33%, Shop C: 25%
Shop A - best value at ₹200 for 4 items (using deal twice)
Explanation
(i) Calculate total paid divided by items received (ii) Discount = (free items/total items) × 100 (iii) Shop A gives lowest effective price per item