Rivera Company Partial Comparative Income Statements For the Years Ended December 31 2014 and 2013 2014 2013 Net sales 424000 368000 Cost of goods sold 254400 239200 Gross margin 169600 128800 Selling expenses 106000 73600 General expenses 50880 36800 Total operating expenses 156880 110400 Operating income 12720 18400