Question

Use your knowledge of fractions to rewrite the recipe for Chocolate chip cookies. The card states that it makes 60 cookies. How much flour is required for 30 people? how much salt is required for 30 people?

Answer 1

to make 60 cookies, you require 2 1/2 cups of flour

30 cookies will require x cups of flour

`\begin{gathered} 2(1)/(2)=(5)/(2) \\ 60\text{cookies}=(5)/(2)\text{cups} \\ 30\text{cookies}=\text{xcups} \\ \text{cross multiply both sides and solve for x} \\ 60* x=(5)/(2)*30 \\ 60x=75 \\ x=(75)/(60) \\ x=(5)/(4) \end{gathered}`

5/4 cups will be required to make 30 cookies.

2.

number of salt required for 30 people

`\begin{gathered} 60\text{cookies}=(3)/(4)\text{salt} \\ 30\text{cookies}=x \\ \text{cross multiply and solve for x} \\ 60* x=(3)/(4)*30 \\ 60x=(90)/(4) \\ 60x*4=90 \\ 240x=90 \\ x=(90)/(240) \\ x=(3)/(8) \end{gathered}`

30 cookies will require 3/8 teaspoon of salt.