Here is what needs to be accomplished.

1. Record and post the necessary closing entries for Business Solutions.

2. Prepare a post-closing trial balance as of December 31, 2011.

After the success of the companys first two months, Santana Rey continues to operate Business Solutions. The November 30, 2011, unadjusted trial balance of Business Solutions (reflecting its transactions for October and November of 2011) follows.

101 Cash 38,264

106 Accounts receivable 12,618

126 Computer supplies 2,545

128 Prepaid insurance 2,220

131 Prepaid rent 3,300

163 Office equipment 8,000

164 Accumulated depreciationOffice equipment -

167 Computer equipment 20,000

168 Accumulated depreciationComputer equipment -

201 Accounts payable -

210 Wages payable -

236 Unearned computer services revenue -

301 S. Rey, Capital 73,000

302 S. Rey, Withdrawals 5,600

403 Computer services revenue 25,659

612 Depreciation expenseOffice equipment -

613 Depreciation expenseComputer equipment -

623 Wages expense 2,625

637 Insurance expense -

640 Rent expense -

652 Computer supplies expense -

655 Advertising expense 1,728

676 Mileage expense 704

677 Miscellaneous expenses 250

684 Repairs expenseComputer 805

Totals $98,659 $98,659

Business Solutions had the following transactions and events in December 2011.

Dec. 2 Paid $1,025 cash to Hillside Mall for Business Solutions share of mall advertising costs.

3 Paid $500 cash for minor repairs to the companys computer.

4 Received $3,950 cash from Alexs Engineering Co. for the receivable from November.

10 Paid cash to Lyn Addie for six days of work at the rate of $125 per day.

14 Notified by Alex's Engineering Co. that Business Solutions bid of $7,000 on a proposed project has been accepted. Alexs paid a $1,500 cash advance to Business Solutions.

15 Purchased $1,100 of computer supplies on credit from Harris Office Products.

16 Sent a reminder to Gomez Co. to pay the fee for services recorded on November 8.

20 Completed a project for Liu Corporation and received $5,625 cash.

2226 Took the week off for the holidays.

28 Received $3,000 cash from Gomez Co. on its receivable.

29 Reimbursed S. Rey for business automobile mileage (600 miles at $0.32 per mile).

31 S. Rey withdrew $1,500 cash from the company for personal use.

The following additional facts are collected for use in making adjusting entries prior to preparing financial statements for the company's first three months:

a. The December 31 inventory count of computer supplies shows $580 still available.

b. Three months have expired since the 12-month insurance premium was paid in advance.

c. As of December 31, Lyn Addie has not been paid for four days of work at $125 per day.

d. The company's computer is expected to have a four-year life with no salvage value.

e. The office equipment is expected to have a five-year life with no salvage value.

f. Three of the four months' prepaid rent has expired.