2010 AMC 10B Problems/Problem 8

We see how many common integer factors 48 and 64 share. Of the factors of 48 - 1, 2, 3, 4, 6, 8, 12, 16, 24, and 48; only 1, 2, 4, 8, and 16 are factors of 64. So there are $\boxed{{(E) 5}$ (Error compiling LaTeX. Unknown error_msg) possibilities for the ticket price.