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E6-21 Analyzing Gross Profit Percentage on the Basis of a Multistep Income Statement [LO 6-5 The 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 Salartes and Wages Expense Sales of Merchandise on Cash Sales of Merchandise for Credit $ 19,600 171,000 19,530 7,410 42,600 252,000 44,400