Boojo walk to his school which is at a distance of 3km frome his house in 30 min on reaching he finds that the school is closed and comes back by bicycle with his friend and reached home in 20 min what will be the boojo in km/hr
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Boojho Home to school to again home
From home to school distance is 3 km time taken is 30 min = (30/60) hour = 0.5 hour
And in returning from school to home time taken = 20 min = (20/60) hour = 0.33 hour
average speed = Total distance / time taken
= (3 + 3)/(0.5 + 0.33) km/h
= 7.2 km/h
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