document.write( "Question 601397: You are making 10 tons of concrete that is
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\n" ); document.write( "\n" ); document.write( "How much of the 39% cement mixturemust
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Algebra.Com's Answer #379802 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
x + y = 10\r
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\n" ); document.write( "\n" ); document.write( "(39%)x + (68%)y = (59.3%)(10)
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