Overhead analysis. Armstrong Corporation uses standard costing. The following information is for 2007:

Static-budget machine-hours 33,000 Fixed overhead budget costs $ 5,940,000 Fixed overhead actual costs $ 5,400,000 Variable overhead actual costs $11,520,000 Variable overhead rate per machine-hour $ 360 Actual machine-hours used 30,000 Budgeted machine-hours allowed for actual output 35,000 Required 1. Calculate variable overhead spending variance and efficiency variance.

2. Compute fixed overhead spending variance and production-volume variance.