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14-04-2019
Physics

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A train travels 99 kilometers in 2 hours, and then 90 kilometers in 3 hours. What is its average speed?

Respuesta :

14-04-2019

Average speed =

(total distance)/(total time)

Average speed = (99+90)/(2+3)

That's (189 km) / (5 hr)

Average speed = 37.8 km/hr

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