97.5 miles per hour.
226 miles in 178 minutes equates to an average speed of 76.2 miles per hour.
The average speed over the first 30 miles is equal to the average speed over the next 15 miles. You cannot guarantee that the speed was constant inbetween, though. The average speeds are 45 MPH for each leg.
That depends on the average speed. Choose an appropriate speed, then divide the distance by the speed.
At an average 30 mph: 3 minutes, 12 seconds
At 55 MPH average, about 44 minutes.
32 hours 18.5 minutes.
That depends on the speed you drive, if your average speed for the whole journey is 30mph then it will take approx 3.5 hours, if your average speed is 50mph then it will take approx 2 hours 7 minutes.
33 minutes at 65 mph
This is an average speed of 28.8 mph
It will take 48 minutes to drive 48 miles at the speed of 60mph It will take approximately 41.09 minutes to drive 48 miles at the speed of 70mph
If you run 2.5 miles in 20 minutes your average speed is 7.5 miles per hour.