Math, asked by ashu621, 1 year ago

please solve question 14

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Answered by ask07

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Distance travelled by the train = 480 km Let the speed of the train be x kmph Time taken for the journey = 480/x Given speed is decreased by 8 kmph Hence the new speed of train = (x – 8) kmph Time taken for the journey = 480/(x – 8)� 1280 = x2�– 8x�x2�– 8x – 1280 = 0 On solving we get x = 40 Thus the speed of train is 40 kmph

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