You have already traveled east in your car 100km in 1hr and then south 100km in 2hrs. to get back home, you then drive west 100km for 3 hours and then go north 100km in 4hrs. you would say your average velocity for the total trip
a. 20km/hr
b. 40km/hr
c. 60km/hr
d. 100km/hr
e. none of the above

You first travel 100km in 1 hour which makes your velocity 100km/h (100/1=100)
You then travel 100km in 2 hours which makes your velocity 50km/h (100/2=50)
You then travel 100km in 3 hours which makes your velocity 33.3km/h (100/3=33.3)
Finally, you travel 100km in 4 hours which makes your velocity 25 km/h (100/4=25)

Add up all your velocities (100+50+33.3+25) which makes 208.3
You then divide it by 4 since you have 4 travels.
208.3 / 4 = 52,075

So I would say the answer is E in this case since none of the answers is close to 52km/hr

As newton's first law states a object in motion stays in motion

Ithink it is c ,i hope i you