Cost formula Variable Category Fixed component Actual cost, $ component per machine hour Supplies Utilities Maintenance Indirect labour 16 900 0 20 940 38 500 2 61 100 1 14 200 94 300 2 119 200 Depreciation 68 400 0 70 100 During March, the company worked 14,000 machine-hours and produced 8,000 units. The company had originally planned to work 16,000 machine-hours during March. Required: 1. Calculate the activity variances for March. 2. Calculate the spending variances for March.