A courier pigeon departs Las Vegas for Reno at the same time as another courier pigeon departs Reno for Las Vegas. Both pigeons fly at constant speeds, although different from each other. They cross paths 2x miles from Las Vegas. After each arrives at their destination they immediately turn around, going back and forth without breaks. They cross paths the second time x miles from Reno.

Where will they cross paths the third time?

(In reply to solution by Charlie)

Isn't this one of several possible solutions?

What about the cases when at the second 'crossing' both birds are travelling in the same direction?

Posted by fwaff on 2003-04-14 04:14:31