A bus covers the first 10 km of its jour...

A bus covers the first 10 km of its journey at an average speed of 40 km/hr and the remaining 45 km at an average speed of 60 km/hr. the average speed of the bus for its total journey is

52.5 km/h

55 km/h

50 km/h

57.5 km/h

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The correct Answer is:

55 km/h

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