Answer:
nhjggggggggggggj
Step-by-step explanation:
THE 5 IDENTICAL SHELVES WOULD have to be 76 because if you take 400 - 20 (because that left over) you get 380/5 you get 76 and to check your work you do 5x76=380+20 you get 400 so 76 is you answer
40 boxes would weigh would weigh 120 pounds
