Robertson Corporation is projecting sales in units for the next 5 months as follows 4,500 units 7,100 units 5,300 unit:s ,700 units 3,700 units une July August September October Past experience has shown that the ending inventory for each month must be equal to 10% of the next month's sales in units 14. For budgeting purposes, what is the beginning inventory in units for September? 15. What is the total number ofunits to be produced during the month ofJuly