To fill in the two-way table, we need to determine the total number of 8th graders attending.
From the table, we know:
- Total attendance on Friday = 52
- 7th graders on Friday = 24
- 8th graders on Friday = (Total Friday - 7th graders on Friday)
We calculate the 8th graders on Friday:
- Total Friday = 52
- 7th graders on Friday = 24
- 8th graders on Friday = 52 - 24 = 28
Now let's summarize the information we have:
| | Friday | Saturday | Totals | |-------------|--------|----------|--------| | 7th graders | 24 | | | | 8th graders | 28 | 35 | | | Totals | 52 | | |
Next, we calculate the total for 8th graders:
- 8th graders = 28 (Friday) + 35 (Saturday) = 63
Thus, the total number of 8th graders is 63.
The correct answer is:
63