Pradeep walks to his school which is at a distance of 3 km from his home in 30 minutes. On reaching he
finds that the school is closed and comes back by a bicycle with his friend and reaches home in 20 minutes.
What is his average speed in km/h?
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Answer:
total distance=3KM=(3000km)
+3km
=6000km=(6km)
Total time taken(t1) =30min
=80×60
=4800sec
T2=20×60
=1200sec
Avg. speed=Total distance/total time
=6000/3000
=2m/s
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