Acme Companys production budget for August is 17,500 units and includes the following component unit costs: direct materials, $8; direct labor, $10; variable overhead, $6. Budgeted fixed overhead is $32,000. Actual production in August was 18,000 units, actual unit component costs incurred during August include direct materials, $8.25; direct labor, $9.45; variable overhead, $6.82. Actual fixed overhead was $33,500, the standard variable overhead rate per unit consists of $6 per machine hour and each unit is allowed a standard of 1 hour of machine time. During August, $122,760 of actual variable overhead cost was incurred for 19,800 machine hours.

Required:

Calculate the variable overhead spending variance and the variable overhead efficiency variance