Question

A bus travels first 100 km with the speed of 50 km per hour and next 80 km with speed of 40 km per hour. calculate the average speed ?

Answer 1

Answer:

45km/h

Explanation:

First Case:-

Distance=100km

Speed=50km/h

Time=Distance/Speed=100/50=2 hours

Second Case:-

Distance=80km

Speed=40km/h

Time=Distance/Speed=80/40=2 hours

Thus, average speed = Total distance/Total time=180/2+2=180/4= 45km/h