Answer:
The amount of interest revenue should be included in Concord's 2021 income statement is $59069.934
Step-by-step explanation:
Carrying value of note on january 1, 2020 = $782000*0.77
 = $602140 
Interest for 2020 = $602140*9%
 = $54192.6 
Interest for 2021 = ($602140 + $54192.6)*9%
 = $59069.934
Therefore, The amount of interest revenue should be included in Concord's 2021 income statement is $59069.934