Easiest way to think this one:

At the 2nd time, cow A starts 50 meters behind the start point, so both cows are at the same point when at 950m. There are 50m for both cows, and cow A is the faster one.

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• this is smart way to do it -狼的傳人- ♂ (0 bytes) () 02/03/2009 postreply 07:40:44