A train moving at a constant velocity of 54 km/hr moves east wards for 30 minutes, then due north with the same speed for 40 minutes. What is the average velocity of the train during this run? (in km/hr)

A train moving at a constant velocity of 54 km/hr moves east wards for

1.	A train moving at a constant velocity of 54 km/hr moves east wards for 30 minutes, then due north with the same speed for 40 minutes. What is the average velocity of the train during this run? (in km/hr)
Answer» 30 35 38.6 49.3 Answer :C