Question

A train covers a distance of 120 km at the speed of 75 km/h the next 63 km distance covers with a speed of 45 km/h and last 90 km with the speed of 40 km/h find the average speed of the train?

A 59.75 km/hr
B 41 km/hr
C 54 km/hr
D 45.9 km/hr
E 52 km/hr
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