Question

A car travels first half the distance between two places
with a speed of 30 km/h and the remaining half with a
speed of 50 km/h. The average speed of the car is :​

Answer 1

Explanation:

Let the distance is x km

Total time taken by the car=[(x/2)/30]+[(x/2)/50]hrs

=(x/60)+(x/100)

So the average speed is

=x/[(x/60)+(x/100)]

=(100*60/160)km/hr

=37.5km/hr