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Posted by on Sunday, May 22, 2011 at 6:28am.

A train travels 40 km/hr for 0.2 hr, 50km/hr for next 0.2hr and 60km/hr for next 0.4 hr.calculate the average speed of train

  • SCIENCE(PHYSICS) - , Sunday, May 22, 2011 at 9:07am

    Add up the total distance travelled and divide that by the total time, 0.8 hours.

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