Answer: Solution: As shown in the figure, OA represents the width of the river, and OB represents the direction of the ship, then OA=96m, AB=72m.
According to the meaning of the question, the distance traveled by the ship is:
962?+?722=120 (meters),
The speed of the ship is: 2+3 =5 (m/second),
So the sailing time of the ship is: 1205=24 (second).
Answer: The boat sails for 24 seconds.