X - 40% = 317.27
I wonder if this isn't supposed to be
x - 40%(x) = 317.27 ??? that's the the way I'm going to interpret it......!!!
So we have
x - .40x = 317.27 ( remember 40% = .40 )
.60x = 317.27 divide by .60
x = 317.27 / .60
x = about 528.78