You can't directly convert between a speed and a time. However, in problems involving speed, it often makes sense to apply the following formula:
distance = speed x time
Of course, in this case you need additional data - in this case, a distance.
At 60 miles per hour, six hours. At 30 miles per hour, twelve hours.
1 hour at 14 miles per hour. 2 hours at 7 miles per hour.
6.25 hours at 65 miles per hour = 406.25 miles
32 miles per hour.
Distance = rate * time. (55 miles/hour) * (4 hours) = 220 miles
80........ Miles per hours, get it
You drove 91.25 miles.
65 miles per hour x 4 hours = 260 miles
at 60 miles per hour it is 21.25 hours
miles per hour * 7 60mph * 7 hours = 420 miles
You are traveling two miles per hour.
70 miles/hour * 7 hours = 490 miles