document.write( "Question 903950: How many liters of 70% methyl solution should be added to 200 liters of a 20% methyl solution to obtain a 35% methyl solution? \r
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document.write( "A chemist has one solution that is 20% acid and a second that is 65% acid. How many gallons of each should be mixed together to get 120 gallons of a solution that is 50% acid?
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Algebra.Com's Answer #548415 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! The first problem is set up \n" ); document.write( "0.7*x+0.2*200=0.35(200+x) \n" ); document.write( " The second problem is set up differently than the first because the info we have is different. \n" ); document.write( "a+b=120, \n" ); document.write( "0.2*a+0.65*b=0.5*120 \n" ); document.write( "a=120-b \n" ); document.write( "0.2*(120-b)+0.65*b=60 \n" ); document.write( "24-0.2b+0.65*b=60 \n" ); document.write( "0.45*b=36 \n" ); document.write( "b=80 \n" ); document.write( "a=120-b \n" ); document.write( "a=40 L at 20% b=80 L at 65% \n" ); document.write( "check \n" ); document.write( "0.2*40+0.65*80=0.5*120 \n" ); document.write( "8+52=60 \n" ); document.write( "60=60 \n" ); document.write( "ok \n" ); document.write( " In the future follow website rules and submit one problem at a time. \n" ); document.write( " \n" ); document.write( " |