Question

If you have 20 liters of a juice blend that is 75% juice, how many liters of pure juice need to be added in order to make a juice blend that is 90% juice?

Answer 1

Below

Explanation:

Juice you have now = 20(.75)

Juice you want after adding 'x' liters of pure juice : (20+x)(.9)

Ingredients in = ingredients out

20 (.75) + x ( 1.0) = (20+x)(.9)

15 + x = 18 + .9x

.1x =3

x = 30 liters