Journalize the Adjusting Entries Needed on December 31, the End

Essay

Journalize the adjusting entries needed on December 31, the end of the current accounting period for Petra Industries using the following data:
A. The balance in Office Supplies before adjustment is $4,200. A physical count reveals $2,750 of supplies on hand at December 31.
B. A computer was purchased on January 1 for $12,000. The computer has a useful life of 3 years and is depreciated using the straight-line method.
C. A one-year insurance policy costing $5,400 was purchased on November 1.
D. Employee salaries are owed for 4 days of a regular 5 day work week. Weekly payroll is $13,600.
E. Unearned Maintenance Revenue has a balance of $21,000 before adjustment. Records show that $14,050 of that amount has been earned by December 31.