The average age of students is A and the average age of teachers is B. The number of students is 45 times the number of teachers. What is the average age of students and teachers together?

The average age of students is A and the average age of teachers is B.

1.	The average age of students is A and the average age of teachers is B. The number of students is 45 times the number of teachers. What is the average age of students and teachers together?
A.	(45A + 8B)/7
B.	(45A + B)/46
C.	(45A + B)/8
D.	(45A + 4B)/23
Answer» C. (45A + B)/8