Problema Solution
Pure acid is to be added to a 5% acid solution to obtain 95L of 79% solution. What amounts of both should be used?
Answer provided by our tutors
Let 'x 'represent the amount of pure acid added.
5% of (95 - x) + 100% of x = 79% of 95
0.05*(95 - x) + 1* x = 0.79*95
Simplify and Solve
x = 74 L of pure acid it to be added to 21 L of 5% acid solution to obtain 79% of 95L.