Kamal

Kamal 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. His average speed in km/h is

Correct answer:

v =  7.2 km/h

Step-by-step explanation:

s=3 km t1=30 min h=30:60  h=0.5 h t2=20 min h=20:60  h=0.33333 h  v=t1+t22 s=0.5+0.33332 3=536 km/h=7.2 km/h



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