A reptile has a tail longer than its trunk. The length, in millimeters, of the tail and the trunk of the reptile was found to have a golden ratio. Which of these could be the tail and trunk lengths of the reptile?
Answer Trunk – 55 mm, Tail – 89 mm
Trunk – 55 mm, Tail – 144 mm
Trunk – 89 mm, Tail – 90.16 mm
Trunk – 89 mm, Tail – 160 mm

Question

A reptile has a tail longer than its trunk. The length, in millimeters, of the tail and the trunk of the reptile was found to have a golden ratio. Which of these could be the tail and trunk lengths of the reptile?
Answer    Trunk – 55 mm, Tail – 89 mm 
   Trunk – 55 mm, Tail – 144 mm 
   Trunk – 89 mm, Tail – 90.16 mm 
   Trunk – 89 mm, Tail – 160 mm

directrix · Answer

We have to read what the golden ratio is (it's a number). The golden ratio = 1.61803399 approx.  Divide the tail by the trunk length options and see which answer is closest to the golden ratio.