Exercises (b) If the amount in Insurance Expense is the January 31 adjusting entry, and the original insurance premium was for 1 year, what was the total premium and when was the policy purchased? (c) If $2,500 of salaries was paid in January, what was the balance in Salaries Payable at December 31, 2000? (d) If $1,600 was received in January for services performed in January, what was the balance in Unearned Service Revenue at December 31, 2000?