To determine which orchard is cheaper for the class of 18 students, we need to calculate the total cost for each orchard, including the required chaperones.
Orchard A:
- Admission cost per person: $9
- Total number of people (students + chaperones): 18 students + 3 chaperones = 21 people
- Total cost: 21 people × $9/person = $189
Orchard B:
- Admission cost per person: $10
- Total number of people (students + chaperones): 18 students + 1 chaperone = 19 people
- Total cost: 19 people × $10/person = $190
Now let's compare the total costs:
- Total cost for Orchard A: $189
- Total cost for Orchard B: $190
Since $189 (Orchard A) is less than $190 (Orchard B), we can conclude:
The cheaper option is Orchard A.
The answer is C) Orchard A.