document.write( "Question 1050804: how many milliliters of a 25% acid solution and how many milliliters of a 6 % acid solution must be mixed yo get 285 milliliters of a 12%acid solution \n" ); document.write( "
Algebra.Com's Answer #666425 by addingup(3677)\"\" \"About 
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Let the amount at 25% be x
\n" ); document.write( "Then the amount at 6% will be 285-x
\n" ); document.write( ":
\n" ); document.write( "0.25x+0.06(285-x) = 0.12(285)
\n" ); document.write( "0.25x+17.1-0.06x = 34.2
\n" ); document.write( "0.19x = 17.1
\n" ); document.write( "x = 90ml of the 25% solution
\n" ); document.write( "mixed with
\n" ); document.write( "285-90 = 195ml of the 6% solution
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