18 pizzas were ordered for a holiday party at Reedy Creek Elementary

ANSWER
C. 12
EXPLANATION
1/3 of the pizzas is:
[tex]18\times\frac{1}{3}=\frac{18}{3}=6[/tex]Therefore, 6 pizzas were cheese and the rest were pepperoni:
[tex]18-6=12[/tex]There were 12 pepperoni pizzas.