document.write( "Question 215530: A pharmacist wishes to mix a solution that is 8% Minoxidil. She has on hand 80 ml of a 4% solution and wishes to add some 10% solution to obtain the desired 8% solution. How much 10% solution should she add? \n" ); document.write( "
Algebra.Com's Answer #162913 by ankor@dixie-net.com(22740)\"\" \"About 
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A pharmacist wishes to mix a solution that is 8% Minoxidil.
\n" ); document.write( " She has on hand 80 ml of a 4% solution and wishes to add some 10% solution to obtain the desired 8% solution.
\n" ); document.write( "How much 10% solution should she add?
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\n" ); document.write( "let x = amt of 10% solution required
\n" ); document.write( ":
\n" ); document.write( ".04(80) + .10x = .08(x+80)
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\n" ); document.write( "3.2 + .10x = .08x + 6.4
\n" ); document.write( ":
\n" ); document.write( ".10x - .08x = 6.4 - 3.2
\n" ); document.write( ":
\n" ); document.write( ".02x = 3.2
\n" ); document.write( "x = \"3.2%2F.02\"
\n" ); document.write( "x = 160 ml of 10% solution required
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\n" ); document.write( "Check:
\n" ); document.write( ".04(80) + .10(160) = .08(160+80)
\n" ); document.write( "3.2 + 16 = .08(240)
\n" ); document.write( "19.2 = 19.2
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