document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=547534>Question 547534</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a ferry charges children $5 and adults $8.  Let x be the number of children and y the number of adults.  How many ordered pairs (combinations of cchildren and adults) consisting of whole numbers are possible so the total fee for al passengers is exactly $1000? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #356424 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16949)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=356424\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x+y=13\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "5x+8y=1000\r<BR>\n" );
document.write( "\n" );
document.write( "8y=1000-5x<BR>\n" );
document.write( "y=125-5/8 x\r<BR>\n" );
document.write( "\n" );
document.write( "y has to be a whole number\r<BR>\n" );
document.write( "\n" );
document.write( "so (5/8)x should be a whole number\r<BR>\n" );
document.write( "\n" );
document.write( "x should take values of multipls of 8 till y is equal to 0\r<BR>\n" );
document.write( "\n" );
document.write( "5/8 * x = 125<BR>\n" );
document.write( "x=8*125/5 = 200 \r<BR>\n" );
document.write( "\n" );
document.write( " <BR>\n" );
document.write( "25 combinations are possible </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );