Princeton Review
\(\dfrac{1}{r}\) of a circular pizza has been eaten. If the rest of the pizza is divided into m equal slices, then each of these slices is what fraction of the whole pizza?
A. \(\dfrac{r}{rm}\)
B. \(\dfrac{r-1}{rm}\)
C. \(\dfrac{1}{m}\)
D. \(\dfrac{m-1}{rm}\)
E. \(\dfrac{m-r}{rm}\)
OA B