Question

A bus covers a certain distance in 3 hours 20 minutes at an average speed of 45 km/h . how long will it take to cover the same distance at a speed of 36km/h

Answer 1

speed=distance /time
(45*4/3)=distance
distance =60m
time=speed/distance
=36/60
=3/5
=0.6hours
q

Answer 2

v=45km/h
t=3hr20min=200min/60=10/3hrs
As v=s/t
Now, s=vt
=(45km/hr)*(10/3)
s=150kms
With a speed v=36km/hr
t=s/v
=150/36
=4.16hrs
Therefore,the time taken to cover t=4.16hrs