A bus started its journey from Mumbai and reached Pune in 65 min with its average speed of 60km/hr. If the average speed of the bus is increased by 5 km/hr, how much time will it take to cover the same distance?
Choices:
A) 2 hrs B) 3 hrs C) 1 hrs D) 1 1 / 2 hrs E) 2 1 / 2 hrs

Rationale: sol . distance between ramgarh and devgarh = ( 60 * 65 ) / 60 = 60 average speed of the bus is increased by 5 km / hr then the speed of the bus = 60 km / hr required time = 60 / 60 = 1 hr c
Answer: C