More assumptions....
Correct answer:
"They both took off from an airfield located at a latitude of 88 degrees. One traveled due East, the other due West. They also travelled at the exact same altitude. Minutes later, as they completed their circle of the North Pole, they collided and crashed to the ground, killing all aboard as well as an unfortunate polar bear. No penguins were harmed, as they live at the SOUTH pole. The end.