Sweet Acacia Company's overhead rate was based on estimates of $182,400 for overhead costs and 18,240 direct labour hours. Sweet Acacia's standards allow 2 hours of direct labour per unit produced. Production in May was 830 units, and actual overhead incurred in May was $19,000. The overhead budgeted for 1,660 standard direct labour hours is $16,180 ($4,560 fixed and $11,620 variable). (a) Calculate the total, budget, and volume variances for overhead. Total overhead variance Overhead budget variance Overhead volume variance $