Answer:
1. A bus travels 16km in 4 mins. The total time is 4 minutes.
2. A speeding car traveling at 40 km/hr decides to slow down to 30 km/hr after covering half the distance. The total distance the car travels is 34.29 km/h.
3. A truck goes from Haryana to Bangalore with an average speed of 60 km/hr. The journey takes 30 hours. It returns from Bangalore to Haryana on the same road with an average speed of 40 km/hr. The average speed of the truck during the road trip is 48 km/hr.
