SOLUTION: Question 9. On their way to work, Andrew passes 15 sets of traffic lights and Pauline passes 10 sets of traffic lights. One morning Andrew was stopped by 12 red traffic lights. Ho

Question 1181570: Question 9.
On their way to work, Andrew passes 15 sets of traffic lights and Pauline passes 10 sets of traffic lights. One morning Andrew was stopped by 12 red traffic lights. How many green traffic lights would Pauline need to pass through to have the equivalent ratio of red to green traffic lights as Andrew?
Answer by ikleyn(52786) (Show Source): You can put this solution on YOUR website!
.


Write a proportion


     = .


From the proportion, find  x =  = 8.      ANSWER

Solved.

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