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An aeroplane first flew with a speed of ...

An aeroplane first flew with a speed of 440 kmph and covered a certain distance. It still had to cover 770 km less than what it had already covered, but it flew with a speed of 660 kmph. The average speed for the entire flight was 500 kmph. Find the total distance covered. `1375\ k m` b. `2750\ k m` c. `3250\ k m` d. `4400\ k m`

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