Approach and Explanation: Identify each item as involving: (1) a prepaid expense, (2) an unearned revenue, (3) an accrued revenue, or (4) an accrued expense. From the facts, determine the existing account balances. Read the facts carefully to determine the desired account balances for financial statements in accordance with generally accepted accounting principles (cost principle, revenue recognition principle, expense recognition (matching) principle, etc.). Determine the adjusting entries necessary to bring existing account balances to the appropriate account balances.
This situation involves unearned revenue. At December 31, 2014, before adjustment, there is an Unearned Rent Revenue account with a balance of $10,200. The amount unearned at that date is $10,200 X 10/12 = $8,500. Therefore, an adjusting entry is necessary to transfer the $1,700 earned from the Unearned Rent Revenue account to an earned revenue account.