Question

An earthquake has just occurred. seismic waves from the earthquake are detected at two recording stations. at recording station a, t = 45 s. at recording station b, t = 100 s. which recording station is farther away from the epicenter? a is farther from the epicenter than
b. b is farther from the epicenter than
a. a and b are the same distance from the epicenter. cannot be determined.

Answer 1

B is farther from the Epicenter then A.
Got it right on the assignment

Answer 2

Let be E the epicenter, a and b are the stations



     E                         a                             b
----/---------------------/-------------------------/------------

just after the earthquake has occured, waves must detected step by step, from a, then after from b, Ea < Eb, so , b is farther from the epicenter than 
a.