Kelly is creating lemonade by mixing 3 parts lemon juice with 2 parts sugar. If she uses 3 cups of sugar, how many cups of lemon juice does she use?

lemon juice : parts sugar

3 :2

? :3

3/2 × 3 = 4,5 cups of lemon

4.5

Step-by-step explanation:

the ratio of lemon juice to parts sugar is 3:2.  to convert into cups, it turns into ?:3. to turn 2 into 3, you multiply by 1.5, so you have to do the same to 3, to get 4.5, 3:2 is equal to 4.5:3 so kelly would have to use 4.5 cups of lemon juice.