The velocity of the transverse waves produced

by an earthquake is 6.13 km/s, while that of
the longitudinal waves is 9.9919km/s. A seismograph records the arrival of the transverse
waves 61.5 seconds after that of the longitudinal
waves. How far away was the earthquake?

velocity = displacement / time
6.13 km / seconds = x / 61.5 seconds
x = 376.995km ...?
I think this answer is wrong....