To determine which combination of items Liam can sell, we need to check both the total number of items and the total revenue generated from each option.
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50 cookies and 30 muffins:
- Total items = 50 + 30 = 80 (valid)
- Total revenue = (50 * 3) + (30 * 5) = 150 + 150 = $300 (valid)
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30 cookies and 25 muffins:
- Total items = 30 + 25 = 55 (valid)
- Total revenue = (30 * 3) + (25 * 5) = 90 + 125 = $215 (invalid)
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40 cookies and 20 muffins:
- Total items = 40 + 20 = 60 (valid)
- Total revenue = (40 * 3) + (20 * 5) = 120 + 100 = $220 (invalid)
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25 cookies and 30 muffins:
- Total items = 25 + 30 = 55 (valid)
- Total revenue = (25 * 3) + (30 * 5) = 75 + 150 = $225 (invalid)
From the options, the only valid combination that meets the goal of raising at least $300 while keeping the total items sold to a maximum of 80 is:
50 cookies and 30 muffins.