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Mathematics 10 Online
OpenStudy (anonymous):

A car makes a 254 km trip at an average speed of 40.8 km/h. A second car starting 1 h later arrives at their mutual destination at the same time. What was the average speed of the second car for the period that it was in motion?

OpenStudy (anonymous):

A solution using Mathematica 9 Home Edition for the calculation is attached.

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