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Biology, 27.04.2021 14:00 levin69

Ao express train takes a run of 240 km at a certain speed. Another train whose speed is 12 km/h less takes an hour longer to cover the same distaltice. Find the
speed of the express train in km/hr​

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Ao express train takes a run of 240 km at a certain speed. Another train whose speed is 12 km/h le...
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