Rahul walks to his school which is at a distance of 3km 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.

Rahul walks to his school which is at a distance of 3km 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. Calculate his average speed in km/hr.

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Rahul walks to his school which is at a distance of 3km from his home in 30 minutes.on reaching he finds that the school is closed and comes back by a bicycle with his friend an…

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