To determine how long it takes to travel a certain distance at a given speed, you can use the formula:
Time = Distance / Speed
In this case, the distance is 50 miles, and the speed is 2.5 miles per hour (mph). Plugging these values into the formula, we get:
Time = 50 miles / 2.5 mph
Simplifying the calculation:
Time = 20 hours
Therefore, it would take 20 hours to travel 50 miles at a speed of 2.5 mph.