Perplexing Puzzles, Confounding Conundrums,

and Esoteric Enigmas

Two railway stations, P and Q, are 279 miles apart. A train departs from P at 2:00pm and travels at a constant speed of 51 mph towards Q. At 3:00 pm a second train begins a journey from Q towards P at a constant speed of 60 mph. How far apart are the two trains twenty minutes before they pass each other?