What is the ratio of x to y if: (10x - 3y)/(13x - y) = 3/5 ? Express your answer as a common fraction.
(10x - 3y) / ( 3x - y) = 3/5 cross-multiply
5 (10x - 3y) = 3(3x - y)
50x - 15y = 9x - 3y
50x - 9x = 15y - 3y
41x = 12y
x / y = 12 / 41
