Question

If x : y = 3 : 1 and y : z = 3 : 1, then x : y : z =

Answer 1

Step-by-step explanation:

$\frac{x}{y} = \: \frac{3}{1} \: \: \: \: \: \: \frac{x}{3} = y \: \: \: \: \: \: \\ \frac{y}{z} = \frac{3}{1} = > \frac{x}{ \frac{3}{z} } = \frac{3}{1} = > x = 9z \\ x : y : z = x : \frac{x}{3} : \frac{x}{9} = 9 : 3 : 1$