AMC8 1985 Problem 18

Nine copies of a certain pamphlet cost less than \$ 10.00 while ten coples of the same pamphlet (at the same price) cost more than \$ 11.00. How much does one copy of this pamphlet cost?

Answer Choices
A. \$ 1.07
B. \$ 1.08
C. \$ 1.09
D. \$ 1.10
E. \$ 1.11