Question

You need 3 sticks of butter for every 24 cookies you bake. How many cookies can I make with 5 sticks?

Answer 1

ANSWER

$40\text{ cookies}$

EXPLANATION

We want to find the number of cookies that can be made with 5 sticks.

To solve this, we have to apply proportions. Let the number of cookies that can be made be x.

We have that:

$\begin{gathered} 3s=24c \\ 5s=x \end{gathered}$

Now, cross-multiply:

$\begin{gathered} 3\cdot x=24\cdot5 \\ \Rightarrow x=\frac{24\cdot5}{3} \\ x=40\text{ cookies} \end{gathered}$

That is the number of cookies that can be made.