Posted by **Chris** on Tuesday, February 5, 2013 at 1:09am.

A boat must cross a 260-m-wide river and arrive at a point 110 upstream from where it starts. To do so, the pilot must head the boat at a 45 degree upstream angle. THe current has speed 2.3 m/s.

a) What is the speed of the boat in still water?

b) How much time does the journey take?

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