Final answer:
Salesperson C has the most profitable group of customers with total monthly sales of $19,250, which is the highest among all salespersons provided in the information.
Step-by-step explanation:
To determine which quick-serve restaurant supply salesperson has the most profitable group of customers, we calculate the total monthly sales for each salesperson by multiplying the number of customers by the average monthly sale:
- Salesperson A: 150 customers × $125 = $18,750
- Salesperson B: 120 customers × $150 = $18,000
- Salesperson C: 175 customers × $110 = $19,250
- Salesperson D: 190 customers × $100 = $19,000
Salesperson C has the most profitable group of customers with total monthly sales of $19,250.