Criss-crossing the bay

A boatsman races to cross Isosceles Bay five times, finishing at End. A bicyclist pedals around the bay. How many times faster must the bicyclist travel in order to be sure to beat the boat to End?

Scroll down for a solution to this problem.


Bicyclist must travel a double distance, so he needs to go more than twice as fast.

Solution by Ignacio Larrosa Cañestro.

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