Question

if x y is 25 more than x-y then x is what percent of y ?

Answer 1

x * y = x - y + 25 Add y to both sides

x * y + y = x - y + 25 + y

x * y + y = x + 25

y ( x + 1 ) = x + 25 Divide both sides by x + 1

y = ( x + 25 ) / ( x + 1 ) Long Division of Polynomials

y = 1 + 24 / ( x + 1 )

You have infinite numbers of solutions, so you must give one more condition.