Question

Me ajudem por favor!

Answer 1

A)
$\frac{x}{40}$ = $\frac{3}{5}$
5X = 120
X = 24

B)
$\frac{2}{3} = \frac{x}{9}$
18 = 3X
3X = 18
X = 6

C)
$\frac{5}{x} = \frac{25}{45}$, X≠0
$\frac{5}{x} = \frac{5}{9}$
X = 9

D)
$\frac{20}{30} = \frac{2}{x}$, X≠0
$\frac{2}{3} = \frac{2}{x}$
2X = 6
X = $\frac{2}{6}$
X = 3