SOLUTION: The average age of a group of teachers and students is 20. The average age of the teachers is 35. The average age of the students is 15. I need to know the ratio of teachers to st

Algebra ->  Equations -> SOLUTION: The average age of a group of teachers and students is 20. The average age of the teachers is 35. The average age of the students is 15. I need to know the ratio of teachers to st      Log On


   

Question 422981: The average age of a group of teachers and students is 20. The average age of the teachers is 35. The average age of the students is 15. I need to know the ratio of teachers to students and have it answered as a fraction in simplest form.
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
(35t + 15s) / (t + s) = 20

35t + 15s = 20t + 20s

15t = 5s

t/s = 5/15 = 1/3