2. (SHOW YOUR COMPLETE WORK) A retail store had sales of $750,000 in July and $800,000 in August. The store has 8 full-time employees and each employee works 9 hours per day. In the month of July, the store also had 4 part-time employees and each part-time employee worked 4 hours per day. In the month of August, the store also had 3 part-time employees and each part-time employee worked 5 hours per day. Assume that there are 21 work daws in July and 23 work days in August. a. Find the labor productivity (expressed in sales dollars earned per labor-hour) for the month of July. b. Find the labor productivity (expressed in sales dollars earned per labor-hour) for the moints] August. c. Find the percentage change in labor productivity from July to August. [6 points] [2 points]