A delivery person uses a service elevator to bring boxes of books up to an office. The delivery person weighs 140 lb and each box of books weighs 60 lb. The maximum capacity of the elevator is 1330 lb. How many boxes of books can the delivery person bring up at one time?
take the elevator weight (1330), subtract the delivery persons weight (140) then divide by the weight of the books (60). It ends up being 19.8333 and so on.
