A student cycles to school in 13 minutes and returns in 17 minutes.The school is 3 km away from his home. What is his average speed of cycling? Give your anwser in km/h.
Ryan cycles from his house to the school which is away in . Sean cycles to the school from his house situated away from the school in . The ratio of the speeds of Ryan and Sean will be
A man walks from his house to his dougther's school at a speed of 3km/hr and return back at speed of 4 km/hr. If he takes 21 minutes for the double journey; find the distance between his house and the school.