document.write( "Question 668853: How many litters of pure alcohol must be added to 15 litters of a 60% alcohol solution to obtain an 80% alcohol solution? \n" ); document.write( "
Algebra.Com's Answer #415900 by lwsshak3(11628)\"\" \"About 
You can put this solution on YOUR website!
How many litters of pure alcohol must be added to 15 litters of a 60% alcohol solution to obtain an 80% alcohol solution?
\n" ); document.write( "**
\n" ); document.write( "let x=amt of pure alcohol to be added
\n" ); document.write( "..
\n" ); document.write( "100%x+60%*15=80%(x+15)
\n" ); document.write( "x+9=.8x+12
\n" ); document.write( ".2x=3
\n" ); document.write( "x=15
\n" ); document.write( "amt of pure alcohol to be added=15 liters
\n" ); document.write( "
\n" ); document.write( "
\n" );