Question

Sarah is trying to make cookies for her friend’s birthday party. She found a recipe and realized that she would need to triple it to have enough for everyone. How much of each ingredient does she need? Below is the original recipe.

Answer 1

24 tbsps of butter

3/2 or 1 1/2 cups of white sugar

3/4 cups packed light brown sugar

3 tsp vanilla

3 eggs

9/2 or 4 1/2 cups of all purpose flour

3/3 or 1 tsp baking soda

3/4 tsp salt

9/4 or 2 1/4 cups chocolate chips

Explanation:

It is very simple fractional multiplication. Just multiply each number by 3 since the word problem states that she needs to "triple" it.

For the fractions, substitute 3 for
`(3)/(1)` to multiply.

8 × 3 = 24

`(1)/(2)` ×
`(3)/(1)` =
`(3)/(2)` or
`1(1)/(2)`

Just do the same for the rest of the equations, and you should be good. Comment if you are still confused.

Answer 2

To triple the recipe, Sarah will need 3 times the amount of each ingredient listed in the original recipe. Here's the amount of each ingredient she will need:

24 Teaspoons of butter

1 1/2 cups white sugar

3/4 cup packed light brown sugar

3 teaspoons vanilla

3 eggs

4 1/2 cups all purpose flour

1 teaspoon baking soda

3/4 teaspoon salt

2 1/4 cups chocolate chips