Here Are the Comparative Income Statements of Georgia Development Corporation

Here are the comparative income statements of Georgia Development Corporation. $\begin{array}{c}\text {GEORGIA DEVELOPMENT CORPORATION }\\\text {Comparative Income Statements }\\\text {For the Years Ended December 31}\\\\\begin{array}{lcc}& \underline{\text { December 31,2014 }}& \underline{\text {December 31,2013 }}\\ \text { Net sales } & \$ 600,000 & \$ 500,000 \\\text { Cost of goods sold } & 414,000 & 350,000 \\\text { Gross profit } & 186,000 & 150,000 \\\text { Operating expenses } &\underline{ 150,000 }& \underline{120,000} \\\text { Net income } & \underline{\$ 36,000} & \$ \$ \$ 30,000 \\\end{array}\end{array}$
Instructions
(a) Prepare a horizontal analysis of the income statement data for Georgia Development Corporation using 2013 as a base. (Show the amounts of increase of decrease.)
(b) Prepare a vertical analysis of the income statement data for Georgia Development Corporation for both years.