a student while going in a school bus observed that the average speed of bus while going was 20km/h while his return trip it was 30 km/h fing the average speed of the bus in entire journey
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Average = all numbers addition / 2
20 + 30 /2
50/2
25
25km/h is the average speed
20 + 30 /2
50/2
25
25km/h is the average speed
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