Question

A Man and 6 boxes weigh 300 lbs. If the man weighs 228 lbs., how much does each box weigh?

Answer 1

300-228 = 72
72/6 = 12
12 pounds each.

Answer 2

Well, obviously 72 lb must be boxes. I hope you see why.

Divide that by 6, assuming the boxes are of identical weight.