Question

The delivery person weights 160 lb and each box of books weights 40 lb. The maximum capacity of the elevator is 710 lb. How many boxes of books can the delivery person bring up at one time?

Answer 1

The number of boxes = 13

Explanation:

Given the weight of the delivery person =160 lb

The weight of each box of books=40 lb

maximum capacity of the elevator=710 lb

Let the max number of boxes of books be x. Now the total weight of the boxes and the delivery person should not exceed the maximum capacity of the elevator.

`40*x+160<710`

`40*x<550`

`x<550/40`

`x<13.75`

Therefore the maximum value of x is 13(since it is an integer).