Answer:
13 slices
Explanation:
The pizza has 24 slices. To figure out what 1/8 of 24 is, divide 24 by 8. To figure out what 1/3 of 24 is, divide 24 by 3. 1/8 of 24 is 3, and 1/3 of 24 is 8.
3 + 8 = 11 (number of slices eaten)
24 - 11 = 13 (number of slices left)