it depends how fast you walk
8 minutes
8 hrs
400 divide by 60 walla
It depends on his/her age and how fast is he/she.
400 / 13 = 30 hours and 48 minutes
It takes 22 minutes 12 seconds to fly 148 miles at 400 miles per hour.
400 miles
5.71428571429 hours
2 minutes 59 seconds.
It will take: 5 hours and 20 minutes
(400 miles/trip) x (1 hour / 70 miles) = (400/70) (miles-hour / trip-miles) = 5.7143 hours = 5 hours 43 minutes, with no stops.