Over a four-year period, Jackie Corporation reported the following series of gross profits.

In 2012, the company performed a comprehensive review of its inventory accounting procedures. Based on this review, company records reveal that ending inventory was understated by $10,000 in 2010. Inventory in all other years is correct.
Required:
1. Calculate the gross profit ratio for each of the four years based on amounts originally reported.
2. Calculate the gross profit ratio for each of the four years based on corrected amounts. Describe the trend in the gross profit ratios based on the original amounts versus the corrected amounts.
3. Total gross profit over the four-year period based on the amounts originally reported equals $124,000 ( = $25,000 + $17,000 + $43,000 + $39,000). Compare this amount to total gross profit over the four-year period based on the corrected amounts.

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Net sales Cost of goods sold Gross profit 2009 $50,000 25,000 $25,000 2010 $56,000 39,000 $17,000 2011 $64,000 21,000 $43,000 2012 $80,000 41,000 $39,000