A bus met with an accident 150 km from Jaipur. The bus complete the remaining journey at 4/5th of the previous speed and reached 3 hrs 45 min late at Ahmedabad. If the accident had taken place 50 km further, it would have been only 3 hrs 30 min late. Then, what is the original speed of the bus?
1
50 km/hr
2
40 km/hr
3
45 km/hr
4
60 km/hr
5
None of these