SOLUTION: A pharmacist wishes to mix a solution that is 6​% Minoxidil. She has on hand 90 ml of a 4% solution and wishes to add some 8​% solution to obtain the desired 6​%
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Question 1087795: A pharmacist wishes to mix a solution that is 6% Minoxidil. She has on hand 90 ml of a 4% solution and wishes to add some 8% solution to obtain the desired 6% solution. How much 8% solution should she add?
she should add ? ml
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
A pharmacist wishes to mix a solution that is 6% Minoxidil.
She has on hand 90 ml of a 4% solution and wishes to add some 8% solution to obtain the desired 6% solution.
How much 8% solution should she add?
:
You can look at this and see you need just much of one as the other because 6% is half way between 4% and 8%
But here is the mixture procedure
let x = amt of 8% solution required
:
The decimal equiv equation
.04(90) + .08x = .06(x+90)
3.6 + .08x = .06x + 5.4
.08x - .06x = 5.4 - 3.6
.02x = 1.8
x = 1.8/.02
x = 90 ml of the 8% solution
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