Problema Solution
How many of a 25% acid solution must be added to 40 gallons of 40% acid solution to get a solution that is 30% acid?
Answer provided by our tutors
Let x liter is mixed so in 25% liter it is 0.25*x ltr acd
and in 40 Ltr acid it is 40*.4 = 16 ltr
so finalk solution will have 16+.25*x = .30*(40+x)
x = 80 ltr