document.write( "Question 480651: How may ounces of a 30% alcohol solution must be mixed with 9 ounces of a 35% alcohol solution to make a 31% alcohol solution? \n" ); document.write( "
Algebra.Com's Answer #329146 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
How may ounces of a 30% alcohol solution must be mixed with 9 ounces of a 35% alcohol solution to make a 31% alcohol solution?
\n" ); document.write( "------
\n" ); document.write( "alcohol + alcohol = alcohol
\n" ); document.write( "0.30x + 0.35*9 = 0.31(x+9)
\n" ); document.write( "----
\n" ); document.write( "Multiply thru by 100 to get:
\n" ); document.write( "30x + 35*9 = 31x + 31*9
\n" ); document.write( "-x = -4*9
\n" ); document.write( "x = 36 ounces (amt. of 30% solution needed)
\n" ); document.write( "=================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "
\n" );