Problema Solution
How many milliliters of 25% acid solution need to be added to 60mL of 70% acid solution to get a solution that is 40% acid?
Answer provided by our tutors
Let
x = ml of 25% acid solution
0.25x + 0.70*60 = 0.40(x + 60)
........
click here to see the equation solved for x
........
x = 120 ml
120 milliliters of 25% acid solution is needed.