Incredibly difficult math problem?

Question

A bird is flying towards its nest which is 100 ft away due east. Without considering the wind, the bird can fly at a speed of 5 ft/sec. There is a north blowing wind, however, at a speed of 2 ft/sec. At all times the bird is flying in a direction such that he is directly facing the nest. The bird is not tacking into the wind as a boat would do but is continuously being blown off course and trying to set a new course. How long does it take for the bird to reach the nest? A step by step explanation would be phenomenal because I found the answer online, but the math is incredibly confusing, hopefully someone could help me out with less confusion.

Solution but very confusing for me. http://mathproblems.info/prob55s.htm

Answer 1

Yes, it is an incredibly difficult math problem.  It's like one of those logic problems they give you when you apply for a Computer Science or Software Engineering position.