document.write( "Question 23368: Please help me on this problem. I will write it how it looks in my text book.The two jugs stood side by side on the shelf. One contained a solution that was 60% antiseptic, and the other contained a solution that was 90% antiseptic. How much of each should be used to get 50 milliliters of a solution that is 78% antiseptic? \n" ); document.write( "
Algebra.Com's Answer #12151 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Let's follow the antiseptic in start, add, and finish. \n" ); document.write( "Let amount of 60% anti. be \"x\" \n" ); document.write( "Then amount of 90% anti. is \"50-x\" \n" ); document.write( "Amount of anti in 60% is 0.60x \n" ); document.write( "Amount of anti in 90% is 0.90(50-x)= 45-0.9x \n" ); document.write( "EQUATION: \n" ); document.write( "Amt. in 60% + Amt. in 90% = Amt in 78% \n" ); document.write( " Amt. of anti in 60% + Amt. in 90% = Amt. in 78% \n" ); document.write( " 0.60x + 45-0.90x = 0.78(50)ml \n" ); document.write( " 60x + 4500-90x = 78(50) \n" ); document.write( " -30x = -600 \n" ); document.write( " x = 20 ml \n" ); document.write( " 50-x = 30 ml\r \n" ); document.write( "\n" ); document.write( "Cheers, \n" ); document.write( "Stan H.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |