Question

A recipe calls for 3/4 cup of butter. Angie wants to triple the recipe, but she has only 1 1/8 cups of butter how much does she need to borrow from the neighbor?

Answer 1

Hello there! Your answer would be: She needs to borrow 1
`(1)/(8)` cups.

We first need to find how much she needs, & subtract it how much she has.

Okay, so we need to start by multiplying both sides of 3/4

`(3)/(4)` × 3 =
`(9)/(4)`

Next, convert 4ths to 8ths by multiplying the denominator and numerator by
`(2)/(2)`.

`(9)/(4)` ×
`(2)/(2)` =
`(18)/(8)`

Now that we have that, let's convert what she has, 1
`(1)/(8)` cups into a mixed fraction to make the subtraction easier.

Well, there's 1 whole and 1 leftover, so we are left with
`(18)/(8)`.

So, now we subtract
`(9)/(8)` from
`(18)/(8)`.

`(18)/(8)` -
`(9)/(8)` =
`(9)/(8)`.

Converting back into a mixed number, we get 1
`(1)/(8)` cups left over, or, the amount that she needs to borrow. I hope this helps, and have a great rest of your day! <3