A man travels 600km partly by train and partly by car . if he covers 400km by train and rest by car, it takes him 6hrs and 30min. but if he travels 200 km by train and the rest by car , it takes him half an hour longer. find the speed of the train and that of the car.
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See the speed of train is 100km/hr and that of car is 80km/hr.
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