question_answer

A complete cycle of a traffic light takes 60 s. During each cycle the light is green for 25 s, yellow for 5 s and red for 30 s. At a randomly chosen time, the probability that the light will not be green, is

A)  \[\frac{1}{3}\]                                  

B)  \[\frac{1}{4}\]

C)  \[\frac{4}{12}\]               

D)         \[\frac{7}{12}\]

E)  \[\frac{3}{4}\]