Question

I went from my house to a playground, 300 metres away in 10 minutes. I ran back and reached in 2 minutes. What was my average speed

Answer 1

avg speed = total distance/total time

converting meter into km
300/1000=0.3km

avg speed = (0.3+0.3)/12

avg speed = 0.6/12
=0.05km/min

Answer 2

average speed = total distance / total time
distace=300+300=600
time=10+2=12
average speed=600/12=50m/min