need help with this problem.

Hardy, Inc., has budgeted sales in units for the next five months as follows: Past experience has shown that the ending inventory for each month should be equal to 20% of the next month's sales in unit The inventory on May 31 contained 1,640 units. The company needs to prepare a production budget for the next five months. The total number of units produced in July should be: 6,300 units 7.240 units 6,620 urits 5,980 units Hardy, Inc., has budgeted sales in units for the next five months as follows: Past experience has shown that the ending inventory for each month should be equal to 20% of the next month's sales in unit The inventory on May 31 contained 1,640 units. The company needs to prepare a production budget for the next five months. The total number of units produced in July should be: 6,300 units 7.240 units 6,620 urits 5,980 units