400 hours
six and 2/3 hours (6 hours and 40 minutes).
400 / 13 = 30 hours and 48 minutes
10 hours
5.71428571429 hours
400 ÷ 60 = 6.66 Or 6 hours 40 minutes
Six hours.
5 hours 33 minutes.
400 ÷ 20 = 20 hours (though it is unlikely that the speed would be constant!)
diazepam up to 400 hours... the active metabolite (nordazepam) up to 720 hours... its an extremly long acting drug
(400 miles/trip) x (1 hour / 70 miles) = (400/70) (miles-hour / trip-miles) = 5.7143 hours = 5 hours 43 minutes, with no stops.
About 3 and a half to 4 hours