Question

A cookie factory puts 3/5 of a barrel of flour into each batch of cookies. How much flour will the factory use for 9 batches?

Answer 1

$\bf \begin{array}{ccllll} \textit{barrel of flour}&\textit{cookies batch}\\ \textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\\ \frac{3}{5}&1\\ x&9 \end{array}\implies \cfrac{\frac{3}{5}}{x}=\cfrac{1}{9}$

solve for "x"