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In a 800 m race around a stadium having the circumference of [#permalink]
23 Mar 2004, 01:04
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In a 800 m race around a stadium having the circumference of
20 m, the top runner meets the last runner on the 5th minute of the race.
If the top runner runs at twice the speed of the last runner, what is the time taken by the top runner to finish the race?