Solve for x by cross multiplying then isolating the variable:
[tex] \frac{9}{15}= \frac{x}{10} [/tex] cross multiply
15x=90 Isolate the variable
x=6
Solve for y by cross multiplying then isolating the variable:
[tex] \frac{9}{15} = \frac{6}{y} [/tex] cross multiply
9y=90 Isolate the variable
y=10
