Problema Solution
20 liters of 10% solution. How many liters of 5% solution must be added to get a mixture that is 8%?
Answer provided by our tutors
let
x = the liters of 5% solution
10% of 20 liters + 5% of x liters = 8% of (20 + x) liters
0.1*20 + 0.05*x = 0.08(x + 20)
by solving we find
x = 13.33 liters
we need to add 13.33 liters of 5% solution.