long? (i) A 120-m-long train travels at the speed of 60 km/h. How long will it take to cross a platform of length 180 m?

          long?
(i) A 120-m-long train travels at the speed of 60 km/h. How long will it take to cross a platform of length 180 m?

Added by Joel B.

Alan S. Tussy, R. David Gustafson 5th Edition

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