Question

You are baking chocolate chip cookies. One batch makes 5 dozen big cookies. The recipe calls for 3/4 cup brown sugar. How many cups of brown sugar would you need it you wanted to make 13 dozen​ cookies?

Answer 1

1
`(19)/(20)` cups

Explanation:

`(cookies)/(sugar)` =
`(cookies)/(sugar)`

`(5)/((3)/(4) )` =
`(13)/(x)` Cross multiply and solve for x

5x = (13)(
`(3)/(4)`)

5x =
`(39)/(4)` Divide both sides by 5

x =
`(39)/(4)`÷5

x =
`(39)/(4)` x
`(1)/(5)`

x =
`(39)/(20)`= 1
`(19)/(20)`