Four positive integers A, B, C, and D have a sum of 36. If A + 2 = B - 2 = C + 4 = D - 4, what is the value of the product A*B*C*D?
B = A + 4
C = A - 2
D = A + 6
So
A + B + C + D = 36
A + A + 4 + A - 2 + A + 6 = 36
4A + 8 = 36
4A = 36 - 8
4A = 28
A = 7
B = 11
C = 5
D = 13
You can take it from here......
