document.write( "Question 940958: Gary has a collection of comic books. After selling 70% of his comic books, he has 42 comic books left. How many comic books did he start with? \n" ); document.write( "
Algebra.Com's Answer #573583 by Fombitz(32388)\"\" \"About 
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So 42 books are the remaining 30%.
\n" ); document.write( "\"42%2FX=30%2F100\"
\n" ); document.write( "\"X=4200%2F30\"
\n" ); document.write( "\"X=140\"
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