Question

Determine o valor do termo desconhecido: 15/4 = 30/x 3/5 = x/10

Answer 1

$\frac{15}{4} = \frac{30}{x} \\ 15x = 30.4 \\ 15x = 120 \\ x = \frac{120}{15} \\ x = 8$

$\frac{3}{5} = \frac{x}{10} \\ 5x = 3.10 \\ 5x = 30 \\ x = \frac{30}{5} \\ x = 6$