document.write( "Question 128737: May you please help me solve this problem: \"A bookshelf contains three types of books: novels, biographies, and mysteries. There are three more than twice as many novels as biographies. There is one less than three times as many mysteries as novels. If there are 25 novels, what is the fraction of the books are biographies?\" I tried making a chart but I can't figure out how many books there are for each category. \n" ); document.write( "
Algebra.Com's Answer #96323 by solver91311(24713)\"\" \"About 
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Number of novels: n
\n" ); document.write( "Number of biographies: b
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\n" ); document.write( "\n" ); document.write( "Givens:
\n" ); document.write( "\"n+=+25\"
\n" ); document.write( "\"n=2b%2B3\", if there were twice as many novels as biographies, then \"n+=+2b\", but there are three more than that so \"n=2b%2B3\"
\n" ); document.write( "\"m=3n-1\", similar logic\r
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\n" ); document.write( "\n" ); document.write( "We can substitute 25 for n directly, so:\r
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\n" ); document.write( "\n" ); document.write( "\"25=2b%2B3\" and \"m=3%2825%29-1\"\r
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\n" ); document.write( "\n" ); document.write( "\"m=3%2825%29-1\"
\n" ); document.write( "\"m=74\"\r
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\n" ); document.write( "\n" ); document.write( "\"25=2b%2B3\"
\n" ); document.write( "\"22=2b\"
\n" ); document.write( "\"b=11\"\r
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\n" ); document.write( "\n" ); document.write( "So, we have a total of \"25+%2B+11+%2B+74+=+110\" books\r
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\n" ); document.write( "\n" ); document.write( "\"11%2F110=1%2F10\" are biographies.
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