Question

A raisin cookie recipe call for flour and raisins in the ratio 3/5 : 1/4. if Natilie used 3 cups of flour, how many cups of raisins did she use? write you answer as a mixed number.

Answer 1

The ratio of flour and raisin in cookie recipe is,

`\begin{gathered} (f)/(r)=((3)/(5))/((1)/(4)) \\ =(3)/(5)\cdot(4)/(1) \\ =(12)/(5) \end{gathered}`

Determine the cups of raisins required for 3 cups of floor.

`\begin{gathered} (3)/(r)=(12)/(5) \\ r=(3\cdot5)/(12) \\ =(5)/(4) \\ =1(1)/(4) \end{gathered}`

Thus, cups of raisins required is 1 1/4.