<PRE><B>Question 1009283</B>
I pharmacists wishes to mix a solution that is 3% minoxidil . She has on hand 70 mL of a 1% solution and wishes to add some 5% solution to obtain the desired 3% solution how much 5% solution should she had 
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Equation:
mino + mino = mino
0.01*70 + 0.05x = 0.03(70+x)
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Multiply thru by 100 to get:
70 + 5x = 3*70 + 3x
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2x = 140
x = 70 mL (amt. of 5% solution needed)
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Cheers,
Stan H.
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