Variable manufacturing overhead

Jimmy Java manufactures coffee-makers. The following summarized manufacturing overhead information was taken from their ledger accounts for the year ended December 31, 2019.

65,608

67,200

Fixed manufacturing overhead

379,440

376,320

The production manager provided the following additional information:

• Budgeted number of output units 888 coffee-makers
• Planned allocation rate 3 machine hours per unit
• Actual number of machine-hours used 2,643
• Static-budget variable manufacturing overhead cost $66,600
• Static-budget fixed manufacturing overhead cost $372,960

1. Calculate the rate and efficiency variances for variable overhead: Rate variance: ____________ Efficiency variance: ____________
2. Calculate the rate and production-volume variances for fixed overhead. Rate variance: ____________ Production volume variance: ____________