document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=903271>Question 903271</A>: <I><SPAN STYLE=\"word-break: break-all;\"> car travels a total of 275 miles in 4 hours, traveling part of the time at 60 mph and part of the time at 74 miles per hour. how long did the car travel at each speed?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #548741 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=548741\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a+b=4,<BR>\n" );
document.write( "60*a+74*b=275<BR>\n" );
document.write( "a=4-b<BR>\n" );
document.write( "60*(4-b)+74*b=275<BR>\n" );
document.write( "240-60b+74*b=275<BR>\n" );
document.write( "14*b=35<BR>\n" );
document.write( "b=2.5 <BR>\n" );
document.write( "a=4-b<BR>\n" );
document.write( "a=1.5 hours at 60 mph  and  b=2.5 hours at 74 mph<BR>\n" );
document.write( "check<BR>\n" );
document.write( "1.5+2.5=4<BR>\n" );
document.write( "60*a+74*b=275<BR>\n" );
document.write( "60*1.5+74*2.5=275<BR>\n" );
document.write( "90.0+185.0=275<BR>\n" );
document.write( "275.0=275<BR>\n" );
document.write( "ok<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );