It depends on the rate of speed the car is travelling.
B. 3.27
21 km/h
5.12 hours
3 hours and 16 minutes
3.27 hrs
21 km square
272
577 cm
0.021 km
21 km square
Time = Distance / Speed So, time = 392/120 hours = 3.266... hours = 3 hours 16 minutes.
Approximately 3 hours 20 minutes.