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Abdul, while driving to school, computes the average speed for his trip to be \(20\ kmh^{–1}\). On his return trip along the same route, there is less traffic and the average speed is \(30\ kmh^{–1}\). What is the average speed for Abdul’s trip?
The formula to calculate the average speed,
Consider,
Distance travelled to reach the school \(=\) Distance travelled to reach home \(=\) \(d\)
Time taken to reach school from home \(=\ t_1\)
Time taken to reach home from school \(=\ t_2\)
Average speed of Abdul while going to school,
Average speed of Abdul while returning to home,
Abdul’s average speed for the entire trip \(=\) \(kmh^{-1}\)
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