document.write( "Question 820411: How much water should be added to 16 mL of 12% alcohol solution to reduce the concentration to 8%? \n" ); document.write( "
Algebra.Com's Answer #493520 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
two ways to look at this problem- from the point of view of the water and the point of view of the alcohol.
\n" ); document.write( "water view\r
\n" ); document.write( "\n" ); document.write( ".88*16+x=.92(16+x)
\n" ); document.write( "x=8 mL
\n" ); document.write( "alcohol
\n" ); document.write( ".12*16=.08*(x+16)
\n" ); document.write( "x=8 mL
\n" ); document.write( "I like to do both ways to check my math and make sure I set up the equations correctly.\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );