Purchase date May 1, 2021 (c) If $2,500 of salaries was paid in January, what was the balance in Salaries and Wages Payable at December 31, 2021? Balance in Salaries and Wages Payable at December 31, 2021 $ (d) If $1,800 was received in January for services performed in January, what was the balance in Unearned Service Revenue at December 31, 2021? Balance in Unearned Service Revenue at December 31, 2021 $