document.write( "Question 877046: A cement mixture is composed of 3 elements. By weight, 1/3 of the mixture is sand, 3/5 of the mixture is water, and the remaining 12 pounds of the mixture is gravel. What is the weight of the entire mixture in pounds? \n" ); document.write( "
Algebra.Com's Answer #529138 by josgarithmetic(39618)\"\" \"About 
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Find 12 pounds is what fraction of the mixture by weight.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"1%2F3%2B3%2F5%2Bf=1\"
\n" ); document.write( "\"f=1-1%2F3-3%2F5\"
\n" ); document.write( "\"f=%2815-5-9%29%2F15\"
\n" ); document.write( "\"f=1%2F15\"
\n" ); document.write( "12 pounds is \"1%2F15\" of the mixture. That is, of the entire mixture. The mixture is therefore 15 times 12 pounds.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "m for pounds of entire mixture,
\n" ); document.write( "\"12=%281%2F15%29m\"
\n" ); document.write( "\"m=12%2A15\"
\n" ); document.write( "\"highlight%28m=180%29\"
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