a bus travel 45 km at a uni gf orm speed of 60 km per hour and next cover a distance of 30 km at a speed of 40km per hour calculated the average speed of the bus
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average speed =total displacement / total time
total displacement = 45+30=75
time = displacement /velocity.
total time= 45/60 +30/40.
substitute values in above formula; than you will get,
average speed is 50 km/hr
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