Answer:
[tex]x = 27[/tex]
Step-by-step explanation:
[tex]z = \frac{kx}{y} [/tex]
[tex]8 = \frac{k16}{10} [/tex]
[tex]8(10) = k16[/tex]
[tex]80 = k16[/tex]
[tex] \frac{80}{16} = \frac{k16}{16} [/tex]
[tex]k = 5[/tex]
[tex]9 = \frac{5x}{15} [/tex]
[tex]9(15) = 5x[/tex]
[tex]135 = 5x[/tex]
[tex] \frac{135}{5} = \frac{5x}{5} [/tex]
[tex]x = 27[/tex]
