Respostas

2013-08-02T21:33:27-03:00
Montando a regra de 3 composta, temos:

\dfrac{12}{x}=\dfrac{20}{24}=\dfrac{400}{600}\Longrightarrow\dfrac{12}{x}=\dfrac{5}{6}=\dfrac{2}{3}

Agora, calculando:

\dfrac{12}{x}=\dfrac{2}{3}\cdot\dfrac{6}{5}=\dfrac{2}{1}\cdot\dfrac{2}{5}\\\\\Longrightarrow\dfrac{12}{x}=\dfrac{4}{5}\\\\
4x=60\\\\
x=\dfrac{60}{4}\\\\
x=15

Resposta: Podem ser alimentados com 600kg, durante 24 dias, 15 porcos.