A cost centre is charged with the following actual overhead costs for a period:Allocated costs$28,720 Apportioned costs $10,260 Overheads were absorbed in the cost centre over the period on 1,760 actual labour hours at a predetermined absorption rate of $21·50 per hour. Actual labour hours worked in the period were 90 hours above budget.
What was the overhead over/under absorption in the cost centre?