a man travels 400 km partly by train and partly by car. if he covers half the distance by train and the rest by car, it takes him 4hrs 30mins. but if he travels 100 km by train and the rest by car it takes him 15 minutes longer . find the speed of train and car.
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https://www.meritnation.com/ask-answer/question/a-man-travels-700km-partly-by-train-and-by-car-if-he-travel/math/5218681
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