Need help w/ math

Question

One canned juice drink is 30% orange juice; another is 5% orange juice. How many liters of each should be mixed together in order to get 25L that is 19% orange juice?

Answer 1

30-19 =11

19-5 = 14

14/11 ratio = x/(25-x)

cross multiply

11x=350 -14x

25x =350

x = 14 Liters of 30%, 11 Liters 5%

.3(14)+.05(11) = 4.2 + .55 = 4.75

.19(25) = 4.75