Problema Solution
A pharmacist wishes to mix a solution that is 4% Minoxidil. She has on hand 60 ml of a 2% solution and wishes to add some 6% solution to obtain the desired 4% solution. How much 6% solution should she add?
Answer provided by our tutors
Let x = amount of 6% solution added
then
0.02(60) +0.06x = 0.04(60 + x)
1.2+0.06x=2.4+0.04x
0.02x=1.2
x=1.2/0.02
=60 mL.
x = 60 mL (amount of 6% solution to be added)