(400 miles/trip) x (1 hour / 70 miles) = (400/70) (miles-hour / trip-miles) = 5.7143 hours = 5 hours 43 minutes, with no stops.
4 hours 28 minutes.
About two and a half hours. Take 177 and divide it by 70.
2.814 hours (rounded)
1hr 25mins
27 minutes.
distance = rate * time 120 miles = 70mph * t t = 120 miles / 70 mph ~= 1.71 hours or 1 hour 42 minutes 52 seconds
1 and half hours
4.57 hours
One hour
2 hours 1 minute
1 hour 20 minutes.
21 hours, 25 minutes, 42.86 seconds