Question

A bus travels first 100 kilometre with the speed of 50km/h and the next 80km with the speed of 40km/h Calculate the average speed of the bus​

Answer 1

Answer:

<speed>= 45 km/h

Explanation:

Total distance=100+80=180 km

T1= 100/50=2s

T2=80/40=2s

<speed>=total distance/total time

=180/4

=45 km/h

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Answer 2

formula 3v1×v2 divided by 2v1+v2

here v1 is the speed of the car

so, v1 = 50km/h

3×(50×40) divided by 40+2×(50)

answer is :

42.85 km/h