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14-03-2018
English

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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 and reaches home in 20 minutes. Calculate his average speed in km/hr.

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lattijos lattijos

14-03-2018

3km per 30m equals 6km per hour

3km in 20m = 9 km/h

6+9=15

15/2 = 7.5

Your answer is 7.5 km/h

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