A bus started its journey from Chennai and reached Mumbai in 50 min with its average speed of 60 km/hr. If the average speed of the bus is increased by 6 km/hr, how much time will it take to cover the same distance? Options
A) 45 min.
B) 55 min.
C) 65 min.
D) 60 min.
E) 50 min.
Sol. Distance between Mumbai and Pune=(60*50)/60= 
<gadget id="calculator">(60*50)/60</gadget>
<output>50</output>
50   Average speed of the bus is increased by 6 km/hr then the   speed of the bus= 66 km/hr   Required time = 50*66/60= 
<gadget id="calculator">50*66/60</gadget>
<output>55</output>
55min.   55 min.
<result>B</result>
A bus started its journey from Chennai and reached Mumbai in 50 min with its average speed of 60 km/hr. If the average speed of the bus is increased by 6 km/hr, how much time will it take to cover the same distance?