document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=459347>Question 459347</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have another problem that I need help with\r<BR>\n" );
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document.write( "A car travels 360 miles at a certain speed. If the speed had been 5mph faster the trip would have been made in 1 hr less time. Find the speed.  Thank you. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #314995 by </B><A HREF=/tutors/aboutme.mpl?userid=htmentor><B>htmentor(1343)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=htmentor><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=htmentor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=314995\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A car travels 360 miles at a certain speed. If the speed had been 5mph faster the trip would have been made in 1 hr less time. Find the speed. <BR>\n" );
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document.write( "Let s = the speed of the car<BR>\n" );
document.write( "Let t = the original time<BR>\n" );
document.write( "Then the time to travel the 360 miles is:<BR>\n" );
document.write( "t = 360/s<BR>\n" );
document.write( "If the speed were 5 mph faster, the time [in hrs] would have been:<BR>\n" );
document.write( "t - 1 = 360/(s+5)<BR>\n" );
document.write( "Using the value for t in the 1st equation gives:<BR>\n" );
document.write( "360/s - 1 = 360/(s+5)<BR>\n" );
document.write( "Solve for s:<BR>\n" );
document.write( "(360 - s)/s = 360/(s+5)<BR>\n" );
document.write( "360s + 360*5 - s^2 - 5s = 360s<BR>\n" );
document.write( "s^2 + 5s - 1800 = 0<BR>\n" );
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document.write( "Take the positive solution.<BR>\n" );
document.write( "s = (-5 + 85)/2 = 40<BR>\n" );
document.write( "So the speed of the car is 40 mph </SPAN>\n" );
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