document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=676909>Question 676909</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A bridge charges cars 4.00 and trucks 6.00 to go over. If 200 vehicles go over the bridge and the toll operator collect 860 dollars how many of the vehicles were trucks? I know the answer is 30 trucks but how do I figure it out in a formula. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #420966 by </B><A HREF=/tutors/aboutme.mpl?userid=partha_ban><B>partha_ban(41)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=partha_ban><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=partha_ban><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=420966\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let, t = number of trucks<BR>\n" );
document.write( "Therefore number of cars = 200 - t<BR>\n" );
document.write( "By condition,<BR>\n" );
document.write( "4 * (200 - t) + 6t = 860<BR>\n" );
document.write( "800 - 4t + 6t = 860<BR>\n" );
document.write( "2t = 860 - 800<BR>\n" );
document.write( "2t = 60<BR>\n" );
document.write( "t = 60/2 = 30<BR>\n" );
document.write( "Therefore, number of trucks were 30 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );