document.write( "Question 939652: the direction of a 100% solution of disinfection concentrate direct you to dilute to a 30% solution before using. if you want to make 500ml of the 30% solution how much disinfectant concentrate must be used? \n" ); document.write( "
Algebra.Com's Answer #572629 by stanbon(75887)\"\" \"About 
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the direction of a 100% solution of disinfection concentrate direct you to dilute to a 30% solution before using. if you want to make 500ml of the 30% solution how much disinfectant concentrate must be used?
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\n" ); document.write( "disin + disin = disin
\n" ); document.write( "1*x + 0*(500-x) = 0.30*500
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\n" ); document.write( "100x + 0 = 30*500
\n" ); document.write( "x = 5*30 = 150 ml (amt of concentrate to use)
\n" ); document.write( "500-x = 350 ml (amt of dilution to use)
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\n" ); document.write( "cheers,
\n" ); document.write( "Stan H.
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