Final answer:
The ferry travels 81 miles in 2.25 hours at a speed of 36mph.
Step-by-step explanation:
The distance traveled by the ferry can be calculated using the formula:
Distance = Speed x Time
In this case, the speed of the ferry is 36mph and the time is 2.25 hours. Plugging these values into the formula:
Distance = 36mph x 2.25 hours = 81 miles
Therefore, the ferry travels 81 miles in 2.25 hours.