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प्रश्न
It is 260 km from Patna to Ranchi by air and 320 km by road. An aeroplane takes 30 minutes to go from Patna to Ranchi whereas a delux bus takes 8 hours. Find the average velocity of the plane.
उत्तर
The plane moves in a straight path.
Average velocity = Average speed = 520 Km / h (Patna to Ranchi)
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