Question

Quanto vale 40% de 30%?

Answer 1

Da seguinte forma

$\boxed{40\%~*~30\%~\to~ \frac{40}{100}* \frac{30}{100} ~\to~ \frac{2}{5} * \frac{3}{10} = \frac{6}{50} ~\to~ \frac{3}{25} }$

vale  12%