Question

What is the ratio of x to y?
3/5= x/x+2y

Answer 1

`(3)/(5)=(x)/(x+2y) \ \ \ |\hbox{cross multipy} \\ 3(x+2y)=5x \\ 3x+6y=5x \ \ \ |-3x \\ 6y=2x \ \ \ |/ 2 \\ 3y=x \ \ \ |/ y \\ 3=(x)/(y) \\ (3)/(1)=(x)/(y)`

The ratio of x to y is 3:1.

Answer 2

`(3)/(5)=(x)/(x+2y)\ \ \ \ cross\ multiplication\\\\ 3(x+2y)=5x\\\\ 3x+6y=5x\ \ \ | subtract\ 3x\\\\ 6y=2x\ \ \ \ \ | divide\ by\ 2\\\\ 3y=x\ \ \ \ | divide\ by\ y\\\\ 3=(x)/(y)\\\\ (x)/(y)=3`