A delivery person uses a service elevator to bring boxes of books up to an office. The delivery person weighs 150lb and each box weighs 50 lb. The maximum capacity of the elevator is 1140 lb. How many boxes of books can the delivery person bring up at one time?

I'll say 19boxes so as to be on the safe part

Step-by-step explanation:

To find the maximum mass of box that the elevator can take .

1140-150

990

To get the number of boxes the elevator can take ,

990/50

19.8

However since a 0.2 can make a difference when approximated

I'll will ignore the 0.8

18a

step-by-step explanation:

simply because it is. it's the highest common factor