document.write( "Question 264004: I have 20 gallons of a solution that is 40% alcohol, If I want to end up with 20 gallons of a 60% alcohol solution then how much pure alcohol would I have to add? HINT: If you add x number of gallons of pure alcohol, you first must take away x number of gallons of the 40% solution.\r
\n" ); document.write( "\n" ); document.write( "I have figured out the answer is 4 gallons, I just am not sure how to lay out the problem.
\n" ); document.write( "

Algebra.Com's Answer #194461 by JBarnum(2146)\"\" \"About 
You can put this solution on YOUR website!
\"I have 20 gallons of a solution that is 40% alcohol\"
\n" ); document.write( ".4(20)=8 gallons of alcohol and 12 gallons of solution
\n" ); document.write( ".6(20)=12 gallons of alcohol and 8 of solution
\n" ); document.write( "12gallons - 8 gallons makes 4 gallons more needed of alcohol, but if you just add 4 more gallons you get 24gallons so u have to subtract 4 gallons first and then add 4 pure alcohol
\n" ); document.write( "i cant seem to get an equation for it, maybe someone else can help out
\n" ); document.write( "
\n" );