document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=472725>Question 472725</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1.) Jonathan drove his car from A to B at 81 km/hr. His car broke down and he returned by bus at 54 km/hr. his total travel was 5 hours. how long was his trip by car? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #324071 by </B><A HREF=/tutors/aboutme.mpl?userid=monika_p><B>monika_p(71)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=monika_p><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=324071\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The speed formula is:  v=d/t\r<BR>\n" );
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document.write( "You have given <BR>\n" );
document.write( "speed from A to B  v1=81km/hr<BR>\n" );
document.write( "speed from B to A v2=54km/hr<BR>\n" );
document.write( "total travel time t1+t2=5hr<BR>\n" );
document.write( "the distance d from A to B and B to A is the same<BR>\n" );
document.write( "Then<BR>\n" );
document.write( "v1=d/t1  d=v1*t1<BR>\n" );
document.write( "v2=d/t2  d=v2*t2<BR>\n" );
document.write( "since distnce is same you compare 2 equations\r<BR>\n" );
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document.write( "v1*t1=v2*t2<BR>\n" );
document.write( "81*t1=54*t2<BR>\n" );
document.write( " Now use information about the time t1+t2=5hr ---> t1=5-t2 substitute and solve fo t2 <BR>\n" );
document.write( "81*(5-t2)=54*t2<BR>\n" );
document.write( "405-81t2=54*t2<BR>\n" );
document.write( "135*t2=405<BR>\n" );
document.write( "t2=3hr then trip by car t1=2hr  \r<BR>\n" );
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document.write( " </SPAN>\n" );
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