Problema Solution
A pharmacist must reduce a 50 ounce quantity of a 12% solution of a particular medicine to an 8% solution by adding pure water . How much does he have to add
Answer provided by our tutors
let
x = the amount of pure water that is 0% solution
12% of 50 + 0% of x = 8% of (x + 50)
0.12*50 + 0*x = 0.08*(x + 50)
by solving the equation we find
x = 25 ounces
He has to add 25 ounces of pure water.