A vehicle moves for half of its time at 80 km/h and for rest half of time at 40 km/h. Total distance covered is 60 km. What is the average speed of the car.A 60 km/h B 80 km/h C 120 km/h D 180 km/h

The average speed of a vehicle is calculated by the total distance traveled divided by the total time taken. In this case, the vehicle travels half the time at 80 km/h and the other half at 40 km/h. However, we don't know the exact time spent at each speed, so we can't directly calculate the average speed.

But we do know that the total distance covered is 60 km.

Let's assume that the time taken for each half of the journey is 't'.

So, the distance covered at 80 km/h is 80t and at 40 km/h is 40t.

The total distance covered is the sum of these two distances, which is given as 60 km.

So, we can write the equation as:

80t + 40t = 60

Solving this equation gives t = 0.5 hours.

So, the total time taken for the journey is t + t = 0.5 + 0.5 = 1 hour.

Now, we can calculate the average speed as:

Average speed = Total distance / Total time

= 60 km / 1 hour

= 60 km/h

So, the average speed of the car is 60 km/h. Therefore, the answer is A. 60 km/h.