Problema Solution
John has 50 liters of a 10% peroxide solution. How many liters of a 60% peroxide
solution should he add to get a 28% peroxide solution ?
Answer provided by our tutors
50 liters of a 10% solution = .1 * 50 = 5 liters of pure peroxide
we want to add x liters of 60% peroxide to obtain a 28% solution:
(.6x + 5)/(x+50)=0.28
.6x+5=.28x+14
.32x=9
x=28.125
so add 28.125 liters of 60% peroxide