SOLUTION: a traffic signal is green for 25 seconds, amber for 10, and red for 25. when you reach the signal, what is the probability it will be red ? write in simplest form

Algebra ->  Probability-and-statistics -> SOLUTION: a traffic signal is green for 25 seconds, amber for 10, and red for 25. when you reach the signal, what is the probability it will be red ? write in simplest form      Log On


   

Question 601722: a traffic signal is green for 25 seconds, amber for 10, and red for 25. when you reach the signal, what is the probability it will be red ? write in simplest form
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
P(red) = (time that signal is red)/(total time)

P(red) = 25/(25+10+25)

P(red) = 25/60

P(red) = 5/12