Respuesta :

66.45 ÷ 5= 13.29 
5.20÷ 5= 1.04 
13.29+1.04=14.33 
14.33 is the price of each shirt.
Karl bought a lawn mower for $450, and he charges customers $20 each to mow their lawns. He uses approximately $2 in gas for each lawn that he mows. How many lawns must he mow to break even?