The prices of pizzas at Paul’s are shown in the following table. Paul decided to have a promotion with two special discounts available on the total cost of pizzas, including any toppings: • buy one pizza, get any other one for half price • buy any four pizzas, get another one free Paul had intended that the discount would apply to the cheapest pizza in each case, but forgot to include this wording on the promotional material. He therefore had to allow customers to decide which pizzas would have the discount applied. Seven friends ordered the following pizzas: