document.write( "Question 1081639: Eight gallons of salt consists of 35% salt. It is the result of mixing a 50% solution with a 30% solution. How many gallons of each of the solutions was used? The corresponding modeling system is
\n" );
document.write( "X+y=8
\n" );
document.write( ".5x+.3y=.35(8) \n" );
document.write( "
Algebra.Com's Answer #695701 by josmiceli(19441)![]() ![]() You can put this solution on YOUR website! (1) \n" ); document.write( "(2) \n" ); document.write( "---------------------- \n" ); document.write( "(2) \n" ); document.write( "Multiply both sides of (1) by \n" ); document.write( "and subtract (1) from (2) \n" ); document.write( "(2) \n" ); document.write( "(1) \n" ); document.write( "----------------------- \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "and \n" ); document.write( "(1) \n" ); document.write( "(1) \n" ); document.write( "--------------------- \n" ); document.write( "2 gallons of the 50% solution are needed \n" ); document.write( "6 gallons of the 30% solution are needed \n" ); document.write( "------------------------------------- \n" ); document.write( "check: \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "OK \n" ); document.write( " |