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A boy walks from his home to a post offi...

A boy walks from his home to a post office at a distance of 0.5 km in 20 min. He then returns to his home in time 25 min. Find the average speed of the boy.

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To find the average speed of the boy, we can follow these steps: ### Step 1: Identify the distances and times - The distance from home to the post office (d1) is 0.5 km. - The distance from the post office back to home (d2) is also 0.5 km. - The time taken to walk to the post office (T1) is 20 minutes. - The time taken to return home (T2) is 25 minutes. ...
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