document.write( "Question 104932: A chemist needs to mix a 75% saltwater solution with a 50% saltwater solution to obtain 10 gallons of a 60% saltwater solution. How many gallons of each solution must be used? \n" ); document.write( "
Algebra.Com's Answer #76372 by checkley75(3666)\"\" \"About 
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.75x+.5(10-x)=.6*10
\n" ); document.write( ".75x+5-.5x=6
\n" ); document.write( ".25x=6-5
\n" ); document.write( ".25x=1
\n" ); document.write( "x=1/.25
\n" ); document.write( "x=4 gallons of 60% solution.
\n" ); document.write( "10-4=6 gallons of 50% solution.
\n" ); document.write( "proof
\n" ); document.write( ".75*4+.5*6=6
\n" ); document.write( "3+3=6
\n" ); document.write( "6=6
\n" ); document.write( "
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