document.write( "Question 395602: A solution of 100% concentration how much should I add to 15 litre of water to make the final concentration 2% ?? \n" ); document.write( "
Algebra.Com's Answer #280727 by stanbon(75887) ![]() You can put this solution on YOUR website! A solution of 100% concentration how much should I add to 15 litre of water to make the final concentration 2% ?? \n" ); document.write( "----- \n" ); document.write( "Equation: \n" ); document.write( "Let \"x\" be the amount of 100% solution you add. \n" ); document.write( "--------------------------------- \n" ); document.write( "water + water = water \n" ); document.write( "15 + 0*x = 0.98(15+x) \n" ); document.write( "--- \n" ); document.write( "Multiply thru by 100 to get: \n" ); document.write( "1500 + 0 = 98*15+98x \n" ); document.write( "---- \n" ); document.write( "98x = 1500-1470 \n" ); document.write( "98x = 30 \n" ); document.write( "--- \n" ); document.write( "x = 30/98 \n" ); document.write( "--- \n" ); document.write( "x = 0.306 liters \n" ); document.write( "====================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |