Q1. A bus covered 40% distance of its initial journey at a speed of 15 m/s, next 20% of its journey at a speed of 40 m/s and remaining journey at a speed of 25 m/s. Find the average speed of the bus in the entire journey. Ans. 20.9 m/s Q2. A car maintained a speed of 30 m/s in half of its journey time, 20 m/s in quarter time of its journey and 10 m/s in remaining time of its journey. Find the average speed of the car in its full journey. Ans. 22.5 m/s Q3. Aakash while driving to school, computes the speed for his trip to be 25 km/h. On his return trip along the same route, there was less traffic and the speed was 40 km/h. Find the average speed of Aakash's trip. Ans. 30.7 km/h by www.advguruji.blogspot.com
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