We know that **D = T × V**, where **D** is the __distance__, **T** is the __time__, and **V** is the __velocity__ or __speed__.

In other words, **T = D / V**. We insert the corresponding values to find the time needed for a bit to travel the cable.

**T = D / V **= (2500 meters) / (200,000,000 meters/second) = 0.0000125 s = **12.5 μs**