Final answer:
The balance sheet for accounts and notes receivable on December 31, 20X1 for Aardvark.
Step-by-step explanation:
The balance sheet for accounts and notes receivable at December 31, 20X1 for Aardvark can be presented as follows:
Accounts Receivable: $X
Notes Receivable: $Y
Where X represents the amount of accounts receivable and Y represents the amount of notes receivable.