Question

How many boxes of books can the delivery person bring up at one time?

Answer 1

So if the delievery man weighs 160 pounds and the books is 40 pounds. and the capacity he can carry is 950 then we have to figure out how many books a 160 can carry. 
Division: 160/40=4
950/4=237.5

i tried to answer it. unless i try one more strategy. 

Multiply: 160*40=6400
Divison: 6400/950= 6.73684210526
try and round that huge number and figure it out. because i tried. im sorry. i hope you passed. 

Answer 2

they can carry up 19 boxes at a time

160+40+40+40+40+40+40+40+40+40+40+40+40+40+40+40+40+40+40+40= 920

or

160+40×19=920