Maths

A train travels at a certain speed of a distance of 63km and then travel a distance of 72km at an average speed 6km/h mass than its original speed it takes 3 hours to complete total jaurney what is the original average

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Arush Khan
March 28, 2018, 6:40 a.m.

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Aditya Gaur
March 28, 2018, 8:49 a.m.

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