Question

2 1/3 cups of flour are needed for 1/2 batch of cookies.What is the unit rate that represents how much flour 1 batch of cookies uses?

Answer 1

Given

2 1/3 cups of flour are needed for 1/2 batch of cookies

We want to find the unit rate that represent hom much flour 1 batch of cookies uses

Solution

First we convert 2 1/3 cups to improper fraction

2 1/3 cups of flour = 7/2 cups of flour

Let n denotes the number of cups of flour and c denotes the batch of cookies

Unit rate (r) will be

$r=\frac{n\text{ }}{c}\text{ }$

Where

$\begin{gathered} n=2\frac{1}{3}=\frac{7}{2} \\ c=\frac{1}{2} \end{gathered}$$\begin{gathered} r=\frac{\frac{7}{2}}{\frac{1}{2}} \\ r=\frac{7}{2}\times\frac{2}{1} \\ r=7 \end{gathered}$

Therefore, the unit rate that represents how much flour 1 batch of cookies uses is 7 cups of flour per one batch of cookies