Question

Na figura r/s/t determine o valor de x e y

Answer 1

$\frac{x}{y} = \frac{4}{10} \\ \frac{21 - y}{y} = \frac{4}{10} \\ 210 - 10y = 4y \\ 210 = 14y \\ 15 = y \\ \\ x + y = 21 \\ x + 15 = 21 \\ x = 6$