Three trains are traveling on one north-south track. The first train is colored mustard yellow and beige and is slowly progressing northward at 30 mph, and though no one believes it has the fuel to sustain its momentum, it has not abated in its advancement. Train number two is colored a very ugly orange and black and is also slowly progressing northward, at a rate of 10 mph, despite being weighed down by a 300-lb panda among other dead weights.
Train number three is colored a beautiful blue shade, but is hurtling southward at a rate of 186,282 miles per second, billowing smoke from its locked windows and doors while its passengers scream bloody murder in their futile attempts to escape.
How long will it take before train number three explodes in an enormous ball of fire, taking out a rancorous divorcing couple in the engine room (which would be okay) as well as millions of the train's supporters (which would not be as cool)?
Please show all work; partial credit will be given.