Question : A woman drives a car. During her journey, she travels 20 minutes at a speed of 60 km/hr, another 30 minutes at a speed of 40 km/hr and 1 hour at a speed of 50 km/hr. The average speed of the car is:

Question : Suraj starts his journey from point Q at 2 pm. He drives the car at the speed of 40 km/hr for the first three hours and completes the remaining journey at the speed of 30 km/hr. If Rahul starts moving towards Suraj at 6 pm from point Q at the speed of 80 km/hr, then at

Question : A runner starts running from a point at 5:00 am at the speed of 10 km/hr. The second runner starts from the same point at 8:00 am in the same direction with a speed of 15 km/hr. At what time of the day will the second runner will overtake the first runner?

Question : A train starts at 3:00 pm from Mumbai and moves towards Ahmedabad at the speed of 20 km/hr. Another train starts from Ahmedabad at 8 pm and moves towards Mumbai at the speed of 60 km/hr. If the distance between Mumbai and Ahmedabad is 600 km, then at what time both the trains

Question : A person goes from J to K at a speed of 55 km/hr. He comes back from K to J at a certain speed. If his average speed is $\frac{660}{17}$ km/hr, then what was his speed while moving from K towards J?