document.write( "Question 419167: how many pounds of fresh water must be added to 30 pounds of sea water containing 16% salt (by weight) in order to reduce the percentage of salt to 12%? \n" ); document.write( "
Algebra.Com's Answer #293386 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! how many pounds of fresh water must be added to 30 pounds of sea water containing 16% salt (by weight) in order to reduce the percentage of salt to 12%? \n" ); document.write( "------- \n" ); document.write( "Equation: \n" ); document.write( "salt + salt = salt \n" ); document.write( "0*x + 0.16*30 = 0.12(x+30) \n" ); document.write( "--- \n" ); document.write( "Multiply thru by 100 to get: \n" ); document.write( "0 + 16*30 = 12x + 12*30 \n" ); document.write( "12x = 4*30 \n" ); document.write( "x = (1/3)30 \n" ); document.write( "x = 10 lbs (amt. of fresh water needed) \n" ); document.write( "================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "================= \n" ); document.write( " |