The comparative condensed income statements of Emley Corporation are shown below.

net sales	660,000	600,000
cost of goods sold	483,000	420,000
gross profit	177,000	180,000
operating expenses	125,000	120,000
net income	52,000	60,000

a) prepare a horizontal analysis of the income statement data for Emley Corporation using 2016 as a base (show amounts of increase or decrease)

b) prepare a vertical analysis of the income statement data for Emley Corporation in columnar form for both years.