Question

The recipe for mint chocolate ice cream requires 2 and half cups of cream for 10 people.You need ice cream for 16 people.How much cream will you need?

Answer 1

$$\begin{matrix} 2\dfrac{1}{2}\ cups & for & 10\ people \\ x\ cups & for & 16\ people \end{matrix}$$

$$x=\dfrac{2\dfrac{1}{2}(16)}{10}=\dfrac{\dfrac{5}{2}(16)}{10}=4$$

We will need 4 cups of cream for 16 people.