E6-21 Analyzing Gross Profit Percentage on the Basis of a Multistep Income Statement [LO 6-5] IThe following information applies to the questions displayed below The following summarized data were provided by the records of Mystery Incorporated for the year ended December 31 Office Expense Cost of Goods Sold Income Tax Expense Sales Returns and Allowances Salaries and Wages Expense Sales of Merchandise on Cash Sales of Merchandise for Credit S 18,300 58,000 15,710 6,630 37,400 226,000 39,200