Question

Karl uses 7 cups of flour to make 2 loaves of bread.

Answer 1

7 cups per 2 loaves means 3.5 cups per loaf. 3.5 cups times 6 loaves is 21 cups of flour.

Answer 2

$\bf \begin{array}{ccllll} \textit{cups of flour}&\textit{loaves of bread}\\ \textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\\ 7&2\\ x&6 \end{array}\implies \cfrac{7}{x}=\cfrac{2}{6}$

solve for "x"