SOLUTION: a pharmacist wishes to prepare 200ml of 8% solution, but has only a 10% solution and a 2% solution to mix together. how much of each solution should she use ?

Question 347647: a pharmacist wishes to prepare 200ml of 8% solution, but has only a 10% solution and a 2% solution to mix together. how much of each solution should she use ?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Let A be the amount of 10% solution.
Let B be the amount of 2%solution.
.
.
Volume equation:
1.
Concentration equation:

2.
Subtract eq. 1 from eq. 2,

ml
Then from eq. 1,

ml
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