Two stations A and B are 3140 km apart.  One train starts from A at 7:00 AM and travels towards B at 160 km/h.  Another train starts from B at 9:00 AM and travels towards A at 216 km/h.  At what time (in 24 hours clock time) will trains meet?

16:30

Train A travels 2 hours alone with 160 km/h

     Travelled = 320 km

Remaining distance = 3140 - 320 = 2820

Relative speed = 160 + 216 = 376

time = \(\frac{2820}{376}\) = 7.5 hours i.e. at 16:30