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What is the correct answer?

4

The cruising speed of the aircraft is 500 kmph. If there is a head wind of 50 kmph, then the air speed and ground speed of the aircraft respectively will be

A. 450 kmph and 500 kmph

B. 500 kmph and 450 kmph

C. 450 kmph and 450 kmph

D. 500 kmph and 500 kmph

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