document.write( "Question 994064: A scientist needs 60 liters of a 60% acid solution. He currently has a 40% solution and a 70% solution. How many liters of each does he need to make the needed 60 liters of 60% acid solution?\r
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document.write( "Gabe neeeds ? liters of the 40% solution.\r
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document.write( "He also needs ? liters of the 70% solution. \n" );
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Algebra.Com's Answer #613265 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! A scientist needs 60 liters of a 60% acid solution. He currently has a 40% solution and a 70% solution. How many liters of each does he need to make the needed 60 liters of 60% acid solution? \n" ); document.write( "---------------- \n" ); document.write( "Equation: \n" ); document.write( "acid + acid = acid \n" ); document.write( "---------------------- \n" ); document.write( "0.40x + 0.70(60-x) = 0.60*60 \n" ); document.write( "----- \n" ); document.write( "40x + 70*60 - 70x = 60*60 \n" ); document.write( "----- \n" ); document.write( "-30x = -10*60 \n" ); document.write( "x = 20 liters \n" ); document.write( "---- \n" ); document.write( "Gabe needs 20 liters of the 40% solution. \n" ); document.write( "He also needs 40 liters of the 70% solution. \n" ); document.write( "----- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |