7. Ace Co. prepared an aging of its accounts receivable at December 31 and determined that the net realizable value of the receivables was $500,000. Additional information is available as follows: Accounts receivable at 12/31 (prior to any adjustments) 610,000 Adjustments Allowance for doubtful accounts at 1/1-credit balance Accounts to be written-off oo uncollectible 48,000$68,000 For the year ended December 31 , Ace's bad debt expense would be