Question

Man starts walking at 3 pm . ha walks at a speed of 4 km/hr on level ground and at a speed of 3 km/hr on uphill , 6 km/hr downhill and then 4 km/hr on level ground to reach home at 9 pm. what is the distance covered on one way?

Answer 1

average speed = 4 km per hour +6 km per hour +4 km per hour +3 kilometre per hour ÷4 ×6=17.5km