Question

a motorcyclist drives from A to B with a uniform speed of 30 km/h and returns back with a speed of 20 km/h. Find it's average speed.​

Answer 1

Explanation:

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Answer 2

Answer:

Explanation:

Given :-

A motorcyclist drives from A to B with a uniform speed of 30 km/h and returns back with a speed of 20 km/h.

To Find :-

Average speed.

Formula to be used :-

Average speed = total distance/total time

Time = Distance/Speed.

Solution :-

Let the distance between A to B be x km.

Then,

Time taken to cover A to B, T₁ = x/30

Time taken to cover B to A, T₂ = x/20

Now, Time taken,

Time taken = T₁ + T₂

= x/30 + x/20 = 5x/60 hrs

Average speed = Total distance/Total time

= (x + x)/5x/60

= 24 km/h

Hence, the average speed is 24 km/h.