Question 2 September 2019 Items At cost At retail Opening inventory $1,620 $3,600 New purchase $1,800 $2,400 Net sales $4,000 | Markdowns $300 Shrinkage $200 Operating expenses $1,300 Closing inventory $855 $1,500 Please calculate: (a.) The dollar amount of cost of goods (sold) in September 2019 (b.) The dollar amount of gross margin in September 2019 (c.) The dollar amount of net profit in September 2019