Question

A bus covers a certain distance in 4 hours 20 minutes at an average speed of 60km/hr how long will it take to cover the same distance at a speed of 40km/hr

Answer 1

distance = 4.20/60 = 0.7 km
time = 0.7/40 = 0.0175 hr

Answer 2

Time=4hrs 20mins= 4 1/3hrs
Speed= 60km/hr
so, dist=speed*time
=60*13/3
=20*13
=260km

New speed=40km/hr
dist=260km
so, time=dist/speed
=260/40
=6.5hrs
Answer=6.5hrs