document.write( "Question 755391: A chemist wants to mix a 64% alcohol solution with 7 liters of 51% alcohol solution to produce a solution that is 62% alcohol. How many liters of the 64% alcohol solution should be used? Round to two decimal places. \n" ); document.write( "
Algebra.Com's Answer #459623 by lwsshak3(11628)\"\" \"About 
You can put this solution on YOUR website!
A chemist wants to mix a 64% alcohol solution with 7 liters of 51% alcohol solution to produce a solution that is 62% alcohol. How many liters of the 64% alcohol solution should be used? Round to two decimal places.
\n" ); document.write( "let x=amt of 64% solution to be used
\n" ); document.write( "x+7=amt of 62% mixed solution
\n" ); document.write( "64%x+51%*7=62%(x+7)
\n" ); document.write( ".64x+3.57=.62x+4.34
\n" ); document.write( "0.2x=0.77
\n" ); document.write( "x=3.85
\n" ); document.write( "amt of 64% solution to be used=3.85 liters
\n" ); document.write( "
\n" );