Answer:
Check the explanation
Step-by-step explanation:
The journal entry:
Date Particulars Amount DR Amount CR
31 Jan 2020 Notes Acc Dr. $300000 
 To Customer $30000
( Being Zero interest Notes 
Accepting from customer.) 
31. Dec 2020 Customer A/cc Dr. $19250
 To Interest acc $19250
( Being Interest on notes 300000 at 7% 11 month.) 
 Interest A/cc DR. $19250 
 To Profit & Loss $19250
 ( Being Transfer to Profit & loss Account)