Answer :
In August, the rainfall was 3.4 inches and in September the rainfall was 2.8 inches. If we let s=September's rainfall the equation would be: .6+s+s=6.2 .
Solving that equation would result in September's rainfall and we can add .6 to that to find August's.
Solving that equation would result in September's rainfall and we can add .6 to that to find August's.