An bus covers a certain distance at aspeed of 180 kmph in 5 hours. To cover the same distance in 1hr, it must travel at a speed of?  Choose the most appropriate option
A) 560 km/h
B) 567 km/h
C) 779 km/h
D) 723 km/h
E) 540 km/h
Distance = (180 x 5) = 900 km.   Speed = Distance/Time   Speed = 900 /(5/3) km/hr. [We can write 1 hours as 5/3 hours]   Required speed = 900 x 3/5 km/hr = 540 km/hr.   540 km/h
<result>E</result>
An bus covers a certain distance at aspeed of 180 kmph in 5 hours. To cover the same distance in 1hr, it must travel at a speed of?