Sheen Company reported these income statement data for a 2-year period.

Sheen Company uses a periodic inventory system. The inventories at January 1, 2016, and December 31, 2017, are correct. However, the ending inventory at December 31, 2016, is overstated by $8,000.
Instructions
(a) Prepare correct income statement data for the 2 years.
(b) What is the cumulative effect of the inventory error on total gross profit for the 2 years?
(c) Explain in a letter to the president of Sheen Company what has happened- that is, the nature of the error and its effect on the financial statements.

Sales revenue Beginning inventory Cost of goods purchased Cost of goods available for sale Less: Ending inventory Cost of goods sold Gross proft 2017 $250,000 40,000 202,000 242,000 55,000 187,000 $ 63,000 2016 $210,000 32,000 173,000 205,000 40,000 165,000 45,000