On December 31, 2021, when its Allowance for Doubtful Accounts had a zero balance, Ling Co. estimated that 2% of its net accounts receivable of $450,000 will become uncollectible and records the necessary adjustment to Allowance for Doubtful Accounts. On May 11, 2022, Ling Co. determined that the Jeff Shoemaker account was uncollectible and wrote off $1,100. On June 12, 2022, Shoemaker paid the amount previously written off. 

Instructions 

Prepare the journal entries on December 31, 2021, May 11, 2022, and June 12, 2022.