Determining the distance from each station from the earthquake epicenter is?

Question

The Lag time for CIL is 10 seconds

The Lag time for DTX is 70 seconds

The Lag time for MFL is 110 seconds

The S wave arrives at each station at

CIL: 3:49.7

DTX: 3:50.8

MFL: 4:52.30

The P waves travel 100km in 16.39 seconds

The S waves travel 100km in 24.39 seconds

The Lag time at 100km is 8 seconds

So what is the distance of each station (CIL, DTX, and MFL) from the epicenter??

Answer 1

100km/8sec = 12.5 km distance per second of lag.

CIL 10 sec x 12.5 km/sec = 125 km

DTX 70 sec x 12.5 = 875km

MFL 110 sec x 12.5 = 1375km