Question

A bus 100km/hr in first 2 hour . 64 km in the 1 hour and 72km in the next 2 hours .find the average speed of the bus during the whole journey.

Answer 1

av. speed= total distance/ total time
=236/5
=47.2 km/hr

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Answer 2

hey mate here is your answer
the distance travelled in first 2 hrs
distance = speed*time
= 100*2
= 200 km
now
average speed = Total distance travelled/ total time taken
200+64+72/2+2+1
=336/5
=67.2
hope this helps you