Abdul, while driving to school, computes the average speed for his trip to be 20km h−1. On his return trip along the same route, there is less traffic and the average speed is 30km h−1. What is the average speed for Abdul's trip?
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Let us assume that Abdul is travelling x kilometer distance while going to school.
Distance = Speed x Time
1)When it's average speed is 20 km/hr
2)When it's average speed is 30 km/hr
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