Your brother Michael is a sales representative receiving an annual salary of 180,000.00 plus commission an all his sales above quota of 30,000.00 in accordance with the following schedule. First less than 30,000.00 quota = 1/2% Next 50,000.00 - 69,999.00 = 1% Next 70,000.00 - 99,999.00 2% Over 100,000.00 = 3% Compute for his gross earnings if his sales for the month are: a. 28,500.00 b. 72,900.00 c. 58,200.00 d. 102,300.00