roger took off at 8am driving 45mph. bill went after him 2 hours later and caught up with him at 4pm. how fast did bill drive?

Answer 1

the distances must be the same, so if Bill's velocity = v,

8*45 = 6*v
v = 60

Answer 2

8 times 45 =360 how did you get 60

Answer 3

because 360 = 6v

Answer 4

d1 = d2 = VT = 45 * 8 = 360 Miles.

d2 = VT,
V = d2/T = 360 / (8-2) = 60mi/h.