In the class, the teacher tried to find some measure that I didn't get. He subtracted two times, and divided by one of them.(adsbygoogle = window.adsbygoogle || []).push({});

[itex]\frac{| T2 - T1 | }{T1}[/itex]

He found the duration and decided to divide by one of T. What was the purpose to divide by T?

T2 is the end time

T1 is the start time

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# Didn't get an equation

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