Suppose a car is moving along a straight line OQ as shown in the figure. It moves from O to Q in 15 seconds and then goes to P in 5 seconds. The average speed of a car moving from O to Q & back to P will be:
A car starts from Bangalore to Mumbai and returns back to Bangalore again in 20hrs. What are the average velocity and average speed of the car if odometer reading of the car, when it started was 2200 km and when finished was 3800 km?