SOLUTION:

Question 74975:
Answer by psbhowmick(878) (Show Source): You can put this solution on YOUR website!
Assume that there are equal number of apples in each carton.

a) The no. of apples in each carton of 1st man = .
b) The no. of apples in each carton of 2nd man = .
c) (No. of apples per carton of the 1st man) - (No. of apples per carton of the 2nd man) = 4
So,

So x = 15 [since x = no. of cartons cannot be negative]
Thus the first man had 15 cartons.

So, no. of apples in each carton of the first man = = 12.