Posted by **Minister Obonukut** on Sunday, October 13, 2013 at 3:32am.

A boat propelled so as to travel with a speed of 0.5m/s in still water, moves directly (in a straight line) across a river that is 60m wide. The river flows with a speed of 0.30m/s. How long in seconds does it take the boat to cross the river?

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