A boy goes from his house to school by bus at a speed of 20 km per hour and returns back through the same route at a speed of 30 km per hour. The average speed of his journey is
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Explanation:
A boy goes from his house to school by bus at a speed of =20km per hour
He returns back through the Same route at a speed of=30km per hour
So, the average speed of his journey is=20+30=50
2÷50=25
25 is the average speed of his journey
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