To construct the two-way table based on the provided information, we start by filling in the known values. We have:
- Number of 7th graders on Friday = 24
- Number of 8th graders on Saturday = 35
- Total attendance on Friday = 52
- Total attendance on Saturday = (unknown)
- Total attendance = (unknown)
From the information given, we can fill in the total number of attendees:
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Finding the number of 7th graders on Saturday:
- Since the total attendance on Friday is 52 and we know there are 24 7th graders on Friday, we can deduce that: \[ \text{Number of 8th graders on Friday} = \text{Total on Friday} - \text{7th graders on Friday} = 52 - 24 = 28 \]
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Now we know:
- 7th graders on Friday: 24
- 8th graders on Friday: 28
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Number of 8th graders on Saturday is given as 35.
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Finding the total number of 8th graders (both days):
- Total number of 8th graders = 8th graders on Friday + 8th graders on Saturday \[ \text{Total 8th graders} = 28 + 35 = 63 \]
Now looking at the options provided:
- 28
- 59
- 35
- 63 (this is the correct answer)
Thus, the total number of eighth graders is 63.