To determine which orchard would be cheaper for a class of 18 students, we need to calculate the total cost for each orchard, including both the students and the required chaperones.
Orchard A:
- Cost per person: $9
- Number of required chaperones: 3
- Total number of people (students + chaperones): \(18 + 3 = 21\)
- Total cost for Orchard A: \[ 21 \text{ people} \times 9 \text{ dollars/person} = 189 \text{ dollars} \]
Orchard B:
- Cost per person: $10
- Number of required chaperones: 1
- Total number of people (students + chaperones): \(18 + 1 = 19\)
- Total cost for Orchard B: \[ 19 \text{ people} \times 10 \text{ dollars/person} = 190 \text{ dollars} \]
Now, comparing the total costs:
- Total cost for Orchard A: $189
- Total cost for Orchard B: $190
Thus, Orchard A is cheaper to visit.