document.write( "Question 1198001: : A man bought 15 books for
\n" ); document.write( "#9800. Some of these books cost #600 each
\n" ); document.write( "and the rest cost #700 each. How many of
\n" ); document.write( "each type did he buy.
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Algebra.Com's Answer #831492 by Alan3354(69443)\"\" \"About 
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: A man bought 15 books for
\n" ); document.write( "#9800. Some of these books cost #600 each
\n" ); document.write( "and the rest cost #700 each. How many of
\n" ); document.write( "each type did he buy.
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\n" ); document.write( "x + y = 15
\n" ); document.write( "600x + 700y = 9800
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