Final Answers:
1. The total net effect of the errors on Langley's 2015 net income is:
c. Net income overstated by $39,000.
2. The total net effect of the errors on the amount of Langley's working capital at December 31, 2015 is:
c. Working capital understated by $13,500.
3. The total effect of the errors on the balance of Langley's retained earnings at December 31, 2015 is:
b. Retained earnings understated by $13,500.
Step-by-step explanation:
The ending inventory error of $22,500 understated and the depreciation expense error of $6,000 understated both lead to an overstatement of net income. On the other hand, the ending inventory error of $33,000 overstated has the opposite effect, understating net income. Therefore, the net effect on net income is the difference between the overstatement and understatement, resulting in a net income overstatement of $39,000.
Working capital is calculated as current assets minus current liabilities. The ending inventory error affects current assets, and the net effect is a $22,500 ($33,000 - $22,500) overstatement. However, the prepaid insurance expense error of $54,000 (recorded as an expense but should be an asset) and the machinery sale error ($28,500 cash received but not recorded) both impact current assets negatively, leading to a combined understatement of $67,500 ($54,000 + $28,500). Therefore, the net effect on working capital is an understatement of $13,500.
Retained earnings are affected by net income and dividends. The net income overstatement of $39,000 increases retained earnings. However, since the net effect on working capital is an understatement of $13,500, there is an additional negative impact on retained earnings. The combined effect is a retained earnings understatement of $13,500.