Excluding the stoppages, the speed of a bus is 64 km/hr and including the stoppages the speed of the bus is 48km/hr. For how many minutes does the bus stop per hour?
1) 15 min
2) 10 min
3) 12 min
4) 20 min
5) 18 min
1) 15 min
2) 10 min
3) 12 min
4) 20 min
5) 18 min