This one was answered a while back, but I'll go through it again.
The combined speed of the trains = [124.7 + 253.5] mph = 378.2mph
And, in 8 minutes, they have covered 378.2 *8 / 60 = [50 + 32/75] mi
So.....the distance they have left to cover before they meet = [252.5] - [50 + 32/75] miles =
[202 + 11/150] miles
So......the remaining time until they meet = D/R = [202 + 11/150] / 378.2 = about .5343 hrs = about 32.058 min = about 32 min, 3 sec
So....they will meet at about 10:40:03 AM
