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![[Post New]](/templates/default/images/icon_minipost_new.gif) 3 Jun 2007 13:19:56 IST
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The concept used by karthik is right but there is a mistake in solving the equation. D/(v-20) will become infinite for v=20
he correct answer is v=40 km/hr and D=6 km
T = 6/40 hr = 9 mins
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Krishna Gopal Singh
B.Tech Chemical Engg
IIT Delhi 2002
Currently doing PhD from IIT Delhi |
this reply: 2 points
(with 0 
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