Question

Sabendo que r // s // t, calcule x:

Answer 1

$\frac{5}{6} = \frac{y}{10} \\ \\ 6y = 50 \\ \\ y = \frac{50}{6} = \frac{25}{3}$

$\frac{4}{5} = \frac{x}{ \frac{25}{3} } \\ \\ 5x = 4 \times \frac{25}{3} \\ \\ 5x = \frac{100}{3} \\ \\ x = \frac{100}{3} \times \frac{1}{5} \\ \\ x = \frac{100}{15} \\ \\ x = \frac{20}{3}$