Question

For $1.80 a frocer buys a case of fruit which contains 12 dozen. She knows that two dozen will spoil before she sells them. At what price per dozel must she sell the good ones to gain half of the whole cost?

Answer 1

I assume you mean she wants to make 50% profit, based on a cost of $1.80/dozen. (The wording is ambiguous. If the problem was presented as you posted it, it's from a pretty sloppy text.)

10x = 1.5(1.80*12)
x = 3.24