Question

A boy walks from his home to school at a distance of half km in 15 min. He  then returns to his home in time 20 mins. Find the average speed

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Answer 1

Answer:

5/72 m per second

Explanation:

500m/15×60s

=5/9m per second :going to school speed

=500/1200

=5/12 m per second: coming from school speed

5/9 +5/12

=(5/36)/2

5/72

Answer 2

Answer:

5/72

Explanation:

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