Answer:
The correct option is $29940 as shown in the workings below
Step-by-step explanation:
Contribution margin = Sales * Contribution margin ratio
Contribution margin=67%
Sales=$82000
Contribution margin=$82000*67%
Contribution margin=$54940
Net operating income=contribution -fixed costs
where fixed costs is $25000
Net operating margin=$54940-$25000
Net operating margin=$29940
Choosing $54940 is wrong because the requirement was not contribution margin