document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=744771>Question 744771</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello! I need help on this question. I understand all the speed x time equals distance and so, but i don't quite get this kinds of questions. A man walks to work at 3 1/2 kmph and is one minute late. If he walked at 3 1/3 kmph he would have been three minutes late. What is the distance to his office? Thanks :) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #453541 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=453541\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let the right time be t\r<BR>\n" );
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document.write( "speed = 3 1/2 kmph time taken = t+(1/60) hours\r<BR>\n" );
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document.write( "speed =3 1/3 kmph time taken = t + (3/60) hours\r<BR>\n" );
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document.write( "in both cases distance is the same\r<BR>\n" );
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document.write( "d=rt\r<BR>\n" );
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document.write( "3 1/2 *( t+(1/60) )= distance\r<BR>\n" );
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document.write( "3 1/3 (t + (3/60))= distance\r<BR>\n" );
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document.write( "3 1/2 *( t+(1/60) )= 3 1/3 (t + (3/60))\r<BR>\n" );
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document.write( "7/2((60t+1)/60) = 10/3((60t+3)/60)\r<BR>\n" );
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document.write( "cross multiply\r<BR>\n" );
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document.write( "21(60t+1)/60 = 20(60t+3)/60\r<BR>\n" );
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document.write( "21(60t+1)=20(60t+3)\r<BR>\n" );
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document.write( "1260t+21=1200t+60\r<BR>\n" );
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document.write( "60t=60-21\r<BR>\n" );
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document.write( "60t=39<BR>\n" );
document.write( "t= 39/60\r<BR>\n" );
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document.write( "t= 39 minutes\r<BR>\n" );
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document.write( "With speed of 3 1/2 he takes one minute more => 39+1=40 minutes\r<BR>\n" );
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document.write( "d=rt \r<BR>\n" );
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document.write( "d= (7/2) *(40/60)\r<BR>\n" );
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document.write( "d= 7/3 =2.33 km\r<BR>\n" );
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document.write( " </SPAN>\n" );
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