A car starts at point A with a speed of 40 kmph and reaches point B. Then the car returns to the starting point A with a speed of 60 kmph. What is average speed of the car?
(A) 48 kmph
(B) 49 kmph
(C) 50 kmph
(D) 51 kmph
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I can't understand the question
Explanation:
sorry
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