Question

Recipe for cookies calls for 3 1/4 cups of sugar Amy has already put three and one nights cup how many more cups so she need to put in

Answer 1

So she need
`(5)/(36)\ cups` more to put in.

Explanation:

Given:

Recipe for cookies calls for 3 1/4 cups of sugar.

Amy has already put three and one nine cups.

Now, to find the number of cups she need to put in.

Number of cups of sugar for recipe calls =
`3(1)/(4) =(13)/(4)\ cups.`

Amy has already put =
`3(1)/(9) =(28)/(9)\ cups.`

So, to get the number of cups she need to put in we subtract number of cups of sugar for recipe calls from number of cups of sugar for recipe calls:

`(13)/(4) -(28)/(9)`

Subtracting by taking the same denominator:

`=(117-112)/(36)`

`=(5)/(36)`

Therefore, so she need
`(5)/(36)\ cups` more to put in.