Rhea Corp. sells its product for $6,600 per unit. Variable costs per unit are: manufacturing, $3,600, and selling and administrative, $75. Fixed costs are: $18,000 manufacturing overhead, and $24,000 selling and administrative. There was no beginning inventory at 1/1/15. Production was 20 units per year in 2015–2017. Sales were 20 units in 2015, 16 units in 2016, and 24 units in 2017.

Required:

21. Income under absorption costing for 2016

22. Income under absorption costing for 2017

23. Income under variable costing for 2016

24. Income under variable costing for 2017