document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=281308>Question 281308</A>: <I><SPAN STYLE=\"word-break: break-all;\"> i dont know how to do: The Rocket Coaster has 15 cars, some that hold 4 people and some that hold 6 people. There is room for 72 people altogether. How many 4-passenger cars are there? How many 6-passenger cars are there? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #204320 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=204320\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The Rocket Coaster has 15 cars, some that hold 4 people and some that hold 6 people. There is room for 72 people altogether. How many 4-passenger cars are there? How many 6-passenger cars are there?<BR>\n" );
document.write( "----------------------------<BR>\n" );
document.write( "Equations:<BR>\n" );
document.write( "Car Eq:::::::: f + s = 15 cars<BR>\n" );
document.write( "People Eq:::::4f +6s = 72 people<BR>\n" );
document.write( "---------------------------------<BR>\n" );
document.write( "Multiply thru the Car Equation by 4 to get:<BR>\n" );
document.write( "4f + 4s = 60<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Subtract that from the People Eq and solve for \"s\":<BR>\n" );
document.write( "2s = 12<BR>\n" );
document.write( "s = 6 (3 of six-passenger cars)<BR>\n" );
document.write( "====================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );