A bus started its journey from Mumbai and reached Pune in 54min with its average speed of 55km/hr. If the average speed of the bus is increased by 6km/hr, how much time will it take to cover the same distance? Pick:
A) 45 min. 30sec B) 43min. C) 45min. D) 44 min. 30sec E) 46min.
Sol. Distance between Mumbai and Pune=(55*54)/60=99/2   Average speed of the bus is increased by 6 km/hr then the   speed of the bus = 60 km/hr   Required time = 99/2*60/60 = 44 min. 30sec   44 min. 30sec
<result>D</result>
A bus started its journey from Mumbai and reached Pune in 54min with its average speed of 55km/hr. If the average speed of the bus is increased by 6km/hr, how much time will it take to cover the same distance?