a train travels a distance of 480 km at a uniform speed if the speed had be 8km/h less. then it have taken 3 hour more time to cover the same distance.
find the speed of train??
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Step-by-step explanation:
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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