About 123 minutes if the speed is 60km/t
77/62 = 1hour 14minutes 31seconds (rounded)
1hour1minute48seconds
1.18 hours
77/45 = 1hour 42minutes 40seconds
1 hour 29.5 minutes.
Approximately 17 hours and 32 minutes.
Time = Distance/Speed so 77/100 = 0.77 hours = 46.2 minutes.
17 minutes 8.6 seconds.
1 hour, 11 minutes, 4.62 seconds
1 hour 13 minutes.
77/4.4 = 17.5 hours
According to google earth - Grantham to Birmingham airport is a distance of 77 miles and shoul dtake roughly 1 hour 35 minutes to drive.