document.write( "Question 897886: A chemist needs 10 liters of a 50% salt solution. all she has available is a 20% salt solution and a 70% salt solution. how much of each of the two solutions should she mix to obtain her desired solution? \n" ); document.write( "
Algebra.Com's Answer #544409 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! A chemist needs 10 liters of a 50% salt solution. all she has available is a 20% salt solution and a 70% salt solution. how much of each of the two solutions should she mix to obtain her desired solution? \n" ); document.write( ". \n" ); document.write( "Let x = amount (liters) of 70% \n" ); document.write( "then \n" ); document.write( "10-x = amount (liters) of 20% \n" ); document.write( ". \n" ); document.write( ".70x + .20(10-x) = .50(10) \n" ); document.write( ".70x + 2-.20x = 5 \n" ); document.write( ".50x + 2 = 5 \n" ); document.write( ".50x = 3 \n" ); document.write( "x = 6 liters (70%) \n" ); document.write( ". \n" ); document.write( "amount of 20%: \n" ); document.write( "10-x = 10-6 = 4 liters \n" ); document.write( " \n" ); document.write( " |