Question

Lovell decorates reclaimed shorts and sells them. She pays $420 per month in rent and $21 in expenses for each pair of shorts. She sells the shorts for $35 per pair. How many pairs of shorts does Lovell have to sell per month to break even?

Answer 1

Answer: 30 pairs of shorts

21x+420=35x
subtract 21x from both sides of the equation.
420=14x
get rid of the x by division
420/14
you get 30 =x