document.write( "Question 996841: A chemist named Mr. Nobel has 20 Milliliters of a solution that is 40% acid. He wants to increase the acid content of the solution to make it a 60% acid solution. How many milliliters of pure acid should he add to the solution? \n" ); document.write( "
Algebra.Com's Answer #615130 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
With that description, he must have concentrations as all w/v OR v/v exclusively.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "y, how much of the pure acid to add.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"%2820%2A40%2B100%2Ay%29%2F%28y%2B20%29=60\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"%282%2A40%2B10y%29%2F%28y%2B20%29=6\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"%2840%2B5y%29%2F%28y%2B20%29=3\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"40%2B5y=3y%2B60\"\r
\n" ); document.write( "\n" ); document.write( "\"2y=20\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"highlight%28y=10%29\"
\n" ); document.write( "
\n" );