a car is travelling with a speed of 30 km per hour for half an hour 25 km per hour for one hour and 40 km per hour for two days the average speed of car is (a) 30 km per hour (b) 27km per hour ( C) 45 km per hour (d) 60 km per
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Average speed=3. 5120=34. 286km/h.
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it is the right answer of your question.