document.write( "Question 311090: Please help with title: solving systems by elimination
\n" ); document.write( "A chemist has a beaker of a 3% acid solution and a beaker of a 7% acid solution. He needs to make 75ml of a 4% acid solution. complete the table.\r
\n" ); document.write( "\n" ); document.write( " 3% solutiom + 7% solution = 4% solution
\n" ); document.write( "Amt of solution x + y =
\n" ); document.write( "Amt of acid (ml) ____x + ____y =
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Algebra.Com's Answer #222509 by checkley77(12844)\"\" \"About 
You can put this solution on YOUR website!
.07X+.03(75-X)=.04*75
\n" ); document.write( ".07X+2.25-.03X=3
\n" ); document.write( ".04X=3-2.25
\n" ); document.write( ".04X=.75
\n" ); document.write( "X=.75/.04
\n" ); document.write( "X=18.75 ml. OF 7% SOLUTION.
\n" ); document.write( "75-18.75=56.25 ml. OF 3% SOLUTION.
\n" ); document.write( "PROOF:
\n" ); document.write( ".07*18.75+.03*56.25=.04*75
\n" ); document.write( "1.3125+16.875=3
\n" ); document.write( "3=3
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