Question

The electric clothes dryer you are interested in buying costs $450 with tax. It uses $0.50 of electricity for one hour of drying. It costs $2 per hour to dry clothes at a laundromat. With how many hours' use would the cost of buying and using the dryer at home be the same as going to the laundromat?

Answer 1

well it would take 4 hours of using the electric dryer to equal one hour of drying at the laundromat! so you figure out how long it would take if they are both being used at the same time (and started at the same time) to be the same amount of money! (p.s. you will need pen and paper to figure this one out)