(X+4÷80%*0.2)÷(X+48÷0.8)=36%
(x+1)÷(x+60)=0.36
x+1=0.36*(x+60)
x+1=0.36x+21.6
x-0.36x=21.6-1
0.64x=20.6
x=32.1875