document.write( "Question 278913: In order to conduct an experiment just right, a researcher at a pharmaceutical company called weird growth needs 100 gallons of a special 49% acidic solution. He already has acidic solutions of 25%, 40%, and 100% because the researcher wants keep cost down, he wants to use six times as much 25% solution as 40% solution. How much of each solution will he need to come up with 100 gallons of his 49% solution? \n" ); document.write( "
Algebra.Com's Answer #202991 by richwmiller(17219)\"\" \"About 
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let
\n" ); document.write( "x=25% solution
\n" ); document.write( "y=40% solution and
\n" ); document.write( "z=100% solution
\n" ); document.write( "x+y+z=100
\n" ); document.write( "6y=x
\n" ); document.write( ".25x+.40y+z=100*.49
\n" ); document.write( "x=60 y=10 and z=30 gallons
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