Question

A recipe calls for 5 1/2 cups of flour. Lorenzo only has 3 3/4 cups of flour. Write and slove an equation to find the additional amount of flour lorenzo needs to make the recipe.

Answer 1

1 3/4


5 1/2 - 3 3/4 = 1 3/4

Answer 2

`x=1(3)/(4)`

Explanation:

We are given that a recipe required flour=
`5(1)/(2)=(11)/(2)`

Lorenzo has flour=
`3(3)/(4)=(15)/(4)`

We have to find an equation to find the additional amount of flour Lorenzo needs to make the recipe.

Let x be the additional amount of flour that is required to make the recipe

According to question

`x+(15)/(4)=(11)/(2)`

`x=(11)/(2)-(15)/(4)`

Using subtraction property of equality

`x=(22-15)/(4)`

`x=(7)/(4)=1(3)/(4)`

Hence, Lorenzo needs additional amount of flour to make recipe=
`1(3)/(4)`