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Mathematics, 25.03.2021 14:00 amflet19

An express train makes a run of 240 km at a certain speed. Another train whose speed is 12 km/hr less takes an hour longer to cover the same distance. Find the speed of the Express train in km/hr using quadratic equation​

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An express train makes a run of 240 km at a certain speed. Another train whose speed is 12 km/hr les...
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