document.write( "Question 280374: A pharmist wishes to mis a solution that is 5% Minoxidil. She has on hand 80ml of a 2% solution and wishes to add some 7% solution to obtain the desired 5% solution. How much 7% solution should she add? \n" ); document.write( "
Algebra.Com's Answer #203822 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! .07x+.02*80=.05(80+x) \n" ); document.write( ".07x+1.6=4+.05x \n" ); document.write( ".07x-.05x=4-1.6 \n" ); document.write( ".02x=2.4 \n" ); document.write( "x=2.4/.02 \n" ); document.write( "x=120 ml of thee 7% solution is needed. \n" ); document.write( "Proof: \n" ); document.write( ".07*120+.02*80=.05(80+120) \n" ); document.write( "8.4+1.6=.05*200 \n" ); document.write( "10=10 \n" ); document.write( " |