Year	August - May Sales	June Sales	July Sales	Total Sales
2018-2019	452,700	79,600	87,100	619,400
2019-2020	458,230	76,250	83,750	618,230
2020-2021	430,800	74,850	90,050	595,700

June and July are the only months when there is a surge in sales. Find out if a July 31^st year-end would qualify as a natural business year-end for his business, and whether he can make the switch to a July 31^st year-end. The memo should be in a memo format.