Solution:
1) Finished goods inventory cost $48300
2) a. Higher operating income method variable costing
2) b. Difference in reported income $26,390
1. To know the number of units remaining in closing stock :
Opening inventory + production - sales => 2200 + 19300 - 20600
=> 900 units
Now,
Cost per unit under variable cost = (direct material + direct labour + variable manufacturing overhead)/ number of units manufactured
=>($573,210 + $277,920 + $185,280) / 19,300
=>$53.7 per unit
finished goods inventory cost using variable costing = $53.7*900 units
=>$48300
2) a. variable costing
Since the number of units in closing inventory reduced, the variable costing will show a higher income.
2) b. difference in reported income
= (change in closing units ) *( current year overhead absorption)
here,
change in closing units = 2,200 units - 900 units
=>1300 units
current year overhead absorption = fixed manufacturing overhead / units produced.
=> 391,790 / 19,300 units
=>$20.3 per unit
now,
difference in reported income = $20.3 * 1,300 units
=>$26,390