Question

Regra de três simples
1. Uma fábrica engarrafa 3000 refrigerantes em 6 horas. Quantas horas levará para engarrafar 4000 refrigerantes?

Answer 1

$3000 \implies6 h \\ \\ 4000 \implies \: t \\ \\ t = \frac{24000}{3000} = 8h$

Answer 2

$\Large\boxed{\begin{array}{l}\begin{array}{cc}\sf refrigerantes &\sf horas\\\sf 3000&\sf6\\\sf 4000&\sf x\end{array}\\\\\sf x=\dfrac{4000\cdot6}{3000}\\\\\sf x=\dfrac{24000}{3000}\\\\\sf x=8\, horas~\checkmark\end{array}}$