Columbia Builders Hardware Supply pays all sales representatives 7% commission on the first $40,000 of their individual sales and. 14% commission on their individual sales in excess of $40,000. Assume that Tom James sold merchandise valued at $62,000 during the month of August. Calculate the following amounts. (a) Commission on sales in the sales base: (b) Commission on additional sales: (c) Gross pay: $0 $0