document.write( "Question 608336: can some one help me solve this problem? A chemistry experiment requires 60 mL of a 40% alcohol solution. the lab has an 80% alcohol solution and a 30% alcohol solution. how many mL of the two solutions should be mixed to obtain 60 mL of a 40% alcohol solution? \n" ); document.write( "
Algebra.Com's Answer #383145 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! A chemistry experiment requires 60 mL of a 40% alcohol solution. the lab has an 80% alcohol solution and a 30% alcohol solution. how many mL of the two solutions should be mixed to obtain 60 mL of a 40% alcohol solution? \n" ); document.write( "---------------------- \n" ); document.write( "Equation: \n" ); document.write( "alcohol + alcohol = alcohol \n" ); document.write( "0.80x + 0.30(60-x) = 0.40*60 \n" ); document.write( "------ \n" ); document.write( "80x + 30*60 - 30x = 40*60 \n" ); document.write( "50x = 10*60 \n" ); document.write( "x = (1/5)*60 \n" ); document.write( "x = 12 mL (amt. of 80% solution needed) \n" ); document.write( "---- \n" ); document.write( "60-x = 48 mL (amt. of 30% solution needed) \n" ); document.write( "================================================ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "============== \n" ); document.write( " |