For $4.50 a grocer buys a case of fruit which contains 14 dozen. She knows that four dozen will spoil before sells them. At what price per dozen must she sell the good ones to gain 1/3 of the whole cost.

1 answer

cost: 4.50*14
revenue after spoilage: 10p
we want

10p = 4/3 (4.50*14)
p = 8.40