A box contains a collection of triangular and square tiles. There are 25 tiles in the box, containing 84 edges total. How many square tiles are there in the box?

**Answer Choices**

A. 3

B. 5

C. 7

D. 9

E. 11

A box contains a collection of triangular and square tiles. There are 25 tiles in the box, containing 84 edges total. How many square tiles are there in the box?

**Answer Choices**

A. 3

B. 5

C. 7

D. 9

E. 11