document.write( "Question 8504: how many gallons of salt must be added to 40 gallons of a 20% salt sollution in order to get a 30% sollution \n" ); document.write( "
Algebra.Com's Answer #4722 by glabow(165)\"\" \"About 
You can put this solution on YOUR website!
How many gallons of salt are already in the 20% solution? If you can figure that out, then you can also figure out how much salt will make a 10% solution.
\n" ); document.write( "Would three times that amount make a 30% solution?
\n" ); document.write( "
\n" );