document.write( "Question 1163703: A pharmacist wishes to mix a solution that is 4% Minoxidil. She has on hand 90 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? \n" ); document.write( "
Algebra.Com's Answer #787879 by MathTherapy(10552)\"\" \"About 
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A pharmacist wishes to mix a solution that is 4% Minoxidil. She has on hand 90 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?
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Let amount of 6% to mix, be S
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document.write( "We then get: .06S  + .02(90) = .04(S + 90)
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document.write( ".06S + 1.8 = .04S + 3.6
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document.write( ".06S - .04S = 3.6 - 1.8
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document.write( ".02S = 1.8
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document.write( "Amount of 6% to mix, or \"highlight_green%28matrix%281%2C6%2C+S%2C+%22=%22%2C+1.8%2F.02%2C+%22=%22%2C+90%2C+mL%29%29\"
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document.write( "OR
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document.write( "As they always say on here, 2% and 6% are being used to get 4%, and since 4% is the half-way point between 2% and 6%, it goes without saying that each amount will be the same, or 90 mL. \n" );
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