Question

Alternativas
A)30 m3
B)40 m3
C)50 m3

Answer 1

$10 + 2 \times 10 + 3.5x = 65 \\ \\ 3.5x = 65 - 10 - 20 \\ \\ 3.5x = 35 \\ \\ x = 10 m {}^{3} \\ \\ \\ \\ consumo \: total \: = 10m {}^{3} + 20 \: m {}^{3} + 10m {}^{3} \\ \\ consumo \: total \: = 40 \: m {}^{3}$