To determine the time it takes to walk one mile while traveling at a speed of 4 miles per hour, we can use the formula:
Time = Distance / Speed
In this case, the distance is 1 mile and the speed is 4 miles per hour. Plugging these values into the formula, we get:
Time = 1 mile / 4 miles per hour
Time = 0.25 hours
Since there are 60 minutes in an hour, we can convert the time from hours to minutes by multiplying by 60:
Time = 0.25 hours * 60 minutes/hour
Time = 15 minutes
Therefore, it would take approximately 15 minutes to walk one mile when traveling at a speed of 4 miles per hour.