The distance between two towns is 458km.Two trains start from these two stations at the same time and travel towards each other at 45 km per hour and 60km per hour .In how many hours will theybe 38 km apart from each other

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Please find below the solution to the asked query:

Total distance=458 kmsSpeed of train A=45 km/hrSpeed of train B=60 km/hrAs trains are moving in opposite direction hence relative velocity will be obtainedby adding two velocities.v=60+45=105 km/hrNowAs trains are 38 kms apart, henceRelative distance travelledd=458-38=420 kmTimet=dv=420105=4 hours Answer

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find relative velocity and then divide the remaining distance by relative velocity
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