The following data are available for Marble Hill Factory for the year ended 31 December 2020.

Sales:24,000 units at $50 each

Expected and actual production:30,000 units

Manufacturing costs incurred, in the production of 30,000 units:Variable:$525,000Fixed:$372,000

Non-manufacturing costs incurred in the production of 30,000 units:Variable:$144,800Fixed:$77,400

Beginning inventories:none

REQUIRED:

A)Determine operating income using the variable-costing approach.(11 marks)

B)Determine operating income using the absorption-costing approach.(14 marks)