SOLUTION: a pharmacist wishes to mix solution that is 3% Minoxidil. She has on hand 100 ml of 1% solution and wishes to add some 5% solution to obtain the desired 3% solution. How much 5% s

Question 883785: a pharmacist wishes to mix solution that is 3% Minoxidil. She has on hand 100 ml of 1% solution and wishes to add some 5% solution to obtain the desired 3% solution. How much 5% solution should she add?

can someone solve this question for me pleas?
Found 2 solutions by lwsshak3, josmiceli:
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
a pharmacist wishes to mix solution that is 3% Minoxidil. She has on hand 100 ml of 1% solution and wishes to add some 5% solution to obtain the desired 3% solution. How much 5% solution should she add?
***
x=amt of 5% solution to add
5%x+1%*100=3%(x+100)
.05x+1=.03x+3
.02x=2
x=200
amt of 5% solution to add=200 ml
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = ml of the 5% solution to be added
= ml of the Minoxidil in 5% solution
ml of the Minoxidil in 1% solution
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(1) = ml of 5% plus 1% solution
(2)
----------------------------------
(2)
(2)
(2)
(2)
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She needs 100 ml of the 5% solution
check:
(2)
(2)
(2)
(2)
(2)
OK
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