a train travels a distance of 480 km at a uniform speed . If the speed had been 8 km/hr less, then it would have taken 3 hrs more to cover the same distance . we need to find the speed of the train.

Let the original speed of the train be* x* km/hr.

Given, distance covered by the train = 480 km

∴ Original time taken by train hr

If the speed of the train had been 8 km/hr less, then

New speed of the train = (*x* – 8) km/hr

∴ New time taken by the train

Given, New time taken by train – Original time taken by train = 3

∴ *x* = 40 (Speed of the train cannot be negative)

Thus, the original speed of the train is 40 km/hr.

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