The average age of 33 fifth-graders is 11 . The average age of 55 of their parents is 33 . What is the average age of all of these parents and fifth-graders?

**Answer Choices**

A. 22

B. 23.25

C. 24.75

D. 26.25

E. 28

The average age of 33 fifth-graders is 11 . The average age of 55 of their parents is 33 . What is the average age of all of these parents and fifth-graders?

**Answer Choices**

A. 22

B. 23.25

C. 24.75

D. 26.25

E. 28