Exercise 4-12 the ledger of armour lake lumber supply on july 31, 2017, includes the selected accounts below before adjusting entries have been prepared. debit credit investment in note receivable $20,000 supplies 24,000 prepaid rent 3,600 buildings 250,000 accumulated depreciation—buildings $140,000 unearned service revenue 11,500 an analysis of the company’s accounts shows the following. 1. the investment in the notes receivable earns interest at a rate of 6% per year. 2. supplies on hand at the end of the month totaled $18,600. 3. the balance in prepaid rent represents 4 months of rent costs. 4. employees were owed $3,100 related to unpaid salaries and wages. 5. depreciation on buildings is $6,000 per year. 6. during the month, the company satisfied obligations worth $4,700 related to the unearned services revenue. 7. unpaid maintenance and repairs costs were $2,300.