An areoplane flies from A to B at the rate of 500 km / hr and comes back from B to A at the rate of 700 km / hr . The average speed of the aeroplane is ?
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Answer:
600 km/hr
Step-by-step explanation:
Average speed = variations in speed/ 2
= 500 + 700/2
= 1200/2
= 600 km/hr +ANSWER+
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