A train travels a distance of 720 km at a uniform speed. The speed had been reduced by 12 km/hr due to water in the track that made the passengers wait for 3 more hours . Represent the situation using a polynomial. If the train has to select another track which increases the distance by 30 km find the speed of the train if it has to reach in the same time.
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it will de 143 km it may help you
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