Problema Solution
A pharmacist wishes to mix a solution that is 8% minoxidil. She has on hand 90 ml of a 6% solution and wishes to add some 10% solution to obtain the desired 8% solution. How much is 10% solution should she add?
Answer provided by our tutors
let
x = ml of the 10% solution that the pharmacist needs
0.06*90 + 0.10*x = 0.08(90 + x)
by solving the equation we find
x = 90 ml
click here to see the step by step solution of the equation
the pharmacist needs 90 ml of the 10% solution.