document.write( "Question 30788: Please help me with this. Marion wants to dilute 2 gal of a 28% soap solution to make a 8% solution. How much pure water should she add to make the 8% solution? \n" ); document.write( "
Algebra.Com's Answer #17526 by Fermat(136)![]() ![]() You can put this solution on YOUR website! 2 gall of 28% soap solution \n" ); document.write( "This comprises of 28% of 2 gall = 0.56 gall of pure soap + 1.44 gal of pure water. \n" ); document.write( "Let Marion add n gall of pure water. \n" ); document.write( "Total volume = n+2 gall \n" ); document.write( "Concentratiuon of soap = 0.56 gall/(n+2) gall and this is to equal 8% = 0.08 \n" ); document.write( "0.56/(n+2) = 0.08 \n" ); document.write( "0.56 = 0.08(n+2) \n" ); document.write( "0.56 = 0.08n + 0.16 \n" ); document.write( "0.40 = 0.08n \n" ); document.write( "8n = 40 \n" ); document.write( "n = 5 \n" ); document.write( "Ammount of water to be added is, \n" ); document.write( "n = 5 gallons \n" ); document.write( "============= \n" ); document.write( " |