Question

A yo-yo factory has fixed operating costs of $4500 per day plus costs of $1.20 per yo-yo produced. If a yo-yo sells for $4.80, what is the minimum number that must be sold in a day to earn a profit?

Answer 1

4500 + 1.20x <  4.80x
4500 <  4.80x - 1.20x
4500 <  3.60x
4500/3.60 <   x
1250 <  x.......minimum number would be 1251