A car moves for half of its time at 80km/h and for rest half of time at 40kn/h.total distance coveted is 60km. What is the average speed of the car.
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80 Km/h + 40 Km/h / 2
120 Km/h / 2
60 Km / h
120 Km/h / 2
60 Km / h
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