Vertical Analysis of Income Statement Revenue and expense data for Tribal Technologies Co. are as follows: 2018 2017 Sales Cost of goods sold Selling expenses Administrative expenses $450,000 $362,500 279,000 217,500 58,500 58,000 31,500 32,625 38,250 29,000 Income tax expense a. Prepare an income statement in comparative form, stating each item for both 2048 and 2017 as a percent of sales, Round to one decimal place, Tribal Technologies Co. Comparative Income Statement For the Years Ended December 31, 2018 and 2017 2018 Amount 2018 Percent 2017 Amount 2017 Percent #21 Gross profil Total operating expenses Nel income b. All of the following are true regarding the vertical reforma