To determine if Alice can stay within the $800 budget with 30 people for a 4-hour picnic, we need to calculate the total cost based on the entrance fee and the pavilion rental fee.
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Calculate the cost for 30 people:
- Entrance fee per person: $20
- Number of people: 30
- Total entrance fee = 30 people × $20/person = $600
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Calculate the cost for using the pavilion for 4 hours:
- Pavilion rental fee per hour: $50
- Number of hours: 4
- Total pavilion fee = 4 hours × $50/hour = $200
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Calculate the total cost of the picnic:
- Total cost = Total entrance fee + Total pavilion fee
- Total cost = $600 + $200 = $800
Since the total cost of the picnic is exactly $800, Alice will stay within her budget with her plan.
Therefore, the correct response is: Solving an equation representing this situation proves that 30 people for exactly a 4-hour picnic is possible within the $800 budget.