A man walks towards the north a distance of 10 km at rate of 5 km per hour and then walks towards the west a distance of 12 km in 3hours. What is the average velocity of the man?

225 km per hour

2618 km per hour

2615 km per hour

None of the above



প্রশ্নের বর্ণনাঃ শীঘ্রই আসছে...