c. Sylvia Wingate is a regional sales manager for a software firm. She receives a monthly salary of $3,120 and a commission rate of 6 percent on all sales that she makes. She also receives a commission of of 1 percent on the sales made by salespeople who work under her supervision. Last month, her sales totaled $18,500 and sales of salespersons in her region totaled $124,000.

Monthly salary $______________

Commission on personal sales $______________

Commission on sales of other salespeople $______________

Gross earnings $______________