gedujusting ensure e quarterly E3-9 Thietke Company's fiscal year end is December 31. On January 31, 2008, the company's Analyze adjusted datu partial trial balance shows the following: ISO 2, 3, 4) AN Credit THIETKE COMPANY Adjusted Trial Balance (Partial) January 31, 2008 Debit Supplies $ 700 Prepaid insurance 2.400 Equipment 7.680 Accumulated amortization - equipment Salaries payable Unearned revenue Service revenue Amortization expense 80 Supplies expense Insurance expense 400 Salaries expense 1,900 $4,880 800 750 2.000 950 Instructions (a) If the amount in Supplies Expense is the January 31 adjusting entry, and $850 of supplies was purchased in January, what was the balance in Supplies on January 1? (b) if the amount in Insurance Expense is the January 31 adjusting entry, and the original insurance premium was for one year, what was the total premium, and when was the policy purchased? (e) if the amount in Amortization Expense is the amortization for one month, when was the equip- ment purchased? (d) If $2,500 of salaries was paid in January, what was the balance in Salaries Payable at December 31, 2007 (e) If $1,700 was received in January for services performed in January, what was the balance in Unearned Revenue at December 31, 2007