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 2,664
• Static-budget variable manufacturing overhead cost $66,600
• Static-budget fixed manufacturing overhead cost $372,960

Required:

1. Calculate the budgeted number of machine-hours planned
2. Calculate the budgeted fixed manufacturing overhead costs per machine-hour.
3. Calculate the budgeted variable manufacturing overhead costs per machine-hour.
4. Calculate the budgeted number of machine-hours allowed for actual output achieved
5. Calculate the actual number of coffee-makers made.
6. Calculate the actual number of machine-hours used to make each coffee-maker.

For these 2 questions, remember to indicate whether the variance is favourable or unfavourable (and show calculations):

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

9. Calculate the balance in the fixed manufacturing overhead account and determine whether it is over or underapplied
10. Explain two reasons for the over or underapplied overhead calculated in question 9.