Statement of problem is incorrect!
I think, that many users agree with me.
Fix it or "fix" author of this problem.
He is very crazy man(IMHO)

The statement is correct, you are making an incorrect additional assumption that the statement implies that the Chukcha's speed must be constant. This is false. (Also, please stop insulting the author.)

As for finding maximum of time - it is right.
But how he can achive point B with time, that is littler,then his animals could run?

Edited by author 03.11.2009 15:28

Speed of animals is not constant!