Ants on a tetrahedron
Calvin moves toward Peter,
Peter moves toward David,
David moves toward Arron,
Arron moves toward Calvin
If they continue to moves it this direction they will converge somewhere. What time in seconds will it take the ants to meet each other?
This is a variation of a past brilliant problem, by David M.
The ants are free to roam around in 3-d space.
What generalization could you make from this?