Question

If $\frac{15}{18} = \frac{x}{6} = \frac{10}{y} = \frac{z}{30}$, then what is the value of x+y+z ?

• A. 25
• B. 37
• C. 42
• D. 40

Answer 1

Answer:

C. 42

If $\frac{15}{18} = \frac{x}{6} = \frac{10}{y} = \frac{z}{30}$

$\frac{15}{18}=\frac{x}{6}$

$\implies{x=\frac{15\times6}{18}=5}$

$\frac{15}{18}=\frac{10}{y}\implies{y=\frac{18\times10}{15}=12}$

$\frac{15}{18}=\frac{z}{30}\implies{z=\frac{15\times30}{18}=25}$

$x+y+z=5+12+25=42$