Question

a video store charges a monthly membership fee of $7.50,but the charge to rent each movie is only $1.00 per movie. Another store has no member fee, but it costs $2.50 to rent each movie. How many movies need to be rented each month for the total fees to be the same from either company?

Answer 1

So we want to know when the cost of each is the same:

2.5m=7.5+m subtract m from both sides

1.5m=7.5 divide both sides by 1.5

m=5

So renting 5 movies costs the same from either store. ($12.50)