To complete the two-way table and find the total number of eighth graders, we start with the information provided:
- 7th graders on Friday: 24
- 8th graders on Saturday: 35
- Total 7th graders (Friday + Saturday): 52 (which means there are some 7th graders on Saturday to make this total)
- Total on Friday (7th + 8th): 52, which allows for figuring out how many 8th graders were present on Friday.
Let's fill in the table step by step:
-
Determine how many 7th graders attended on Saturday: Since the total number of students on Friday is 52 and includes 24 7th graders, that means: \[ \text{Number of 8th graders on Friday} = 52 - 24 = 28 \]
-
Given the total number of 8th graders on Saturday is 35: We now have the complete attendance counts:
- 7th graders on Friday: 24
- 8th graders on Friday: 28
- 8th graders on Saturday: 35
-
Total number of 8th graders: To find the total number of 8th graders, we need to account for both days: \[ \text{Total 8th graders} = \text{8th graders on Friday} + \text{8th graders on Saturday} = 28 + 35 = 63 \]
Thus, the total number of eighth graders is 63.
The answer is: 63