Explanation

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

Speed=TimeDistance

Speed=45km/hr

Time=331hrs=10/3hrs

Distance=Speed×Time

Distance=45×310

Distance=15×10

∴Distance=150km

Now Speed=36km/hr

Time=SpeedDistance=36150=4366=4hrs and 10mins