4 flies, 2 males and 2 females, are situated at the corners of 1 square meter. Every fly tries to reach the male/female fly in front of her/him. Their initial positions are shown in the picture above. Since the flies are flying towards another, they will meet each other at some time in the center of the square.
What is the length of the path they have traveled at the moment they reach each other?
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The Answer:
Because all flies constantly fly perpendicular to another fly, they all travel the shortest distance to each other, which is 1 meter. (All flies make a kind of spiral flight to the center of the square, and during this flight, the flies constantly form a square untill they meet in the center).
All of the flies travel 1 meter.
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