Answer:
1.-
notes receivables 28,200 debit
Sales Revenues 28,200 credit
--to record sale in exchange of a note--
notes receivables 1,200 debit
interest revenue 1,200 debit
--to record year-end adjustment--
cash 30,000 debit
interest revenue 600 credit
note receivable 28,400 credit
2.- effective rate 8.51%
Explanation:
Assuming the note bears interest:
principal x rate x time = interest
also:
future value - principal = interest
30,000 - 28,200 = 1,800
time: March 31,2022 - June 30,2021 = 9 months
thus:
28,200 x rate x 9/12 = 1,800
21,150 x rate = 1,800
rate = 1,800 / 21,150 =
rate = 0,0851063 = 8.51%
accrued interest at december 31th:
28,200 x 8.51% x 6/12 = 1200