Assuming you mean: what is the speed if 4000 miles takes 6 hours:
speed = distance/time = 4000 mi / 6 hr = 666 2/3 mph
324/6 = 54 miles per hour
Average speed was 65 mph. 100 miles + 420 miles = 520 miles 2 hours + 6 hours = 8 hours 520/8 = 65 mph
360 miles in 6 hours is an average speed of 360/6 = 60 miles per hour, no matter where it happened, even if it never left the parking lot.
2 hours
Time = Distance /Speed = 546/60 = 9.1 hours = 9 hours and 6 minutes
324/6 = 54 miles per hour
9 hours
180 miles in 3 hours
Depends entirely on your average speed. If your average speed is 80mph then you can travel (80x6) 480 miles in 6 hours.
Average speed was 65 mph. 100 miles + 420 miles = 520 miles 2 hours + 6 hours = 8 hours 520/8 = 65 mph
280/6 = 46.67 miles per hour.
if there's no traffic and are on the interstates, you could actually do about 400 miles in 6 hours and not break the speed of limit of 70 miles an hour
55 miles per hour.
55 miles each hour for 6 hours. 55 x 6 = 330 miles.
At speed of 60 mph it is 4 hours At speed of 40 mph it is 6 hours and so on ...
The average speed is 62.5 miles per hour(mph)
360 miles in 6 hours is an average speed of 360/6 = 60 miles per hour, no matter where it happened, even if it never left the parking lot.