contestada

A train travels 84 kilometers in 1 hours, and then 85 kilometers in 3 hours. What is its average speed?

Respuesta :

The average speed is 42.25 kilometers per hour.
You could find average speed by doing this calculation:

Total distance / Total time needed.

So, the average speed would be :

(84 kilometers + 85 kilometers) / (1 hours + 3 hours)

= 169 kilometers/4 hours

= 42.25 kilometers/hour

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