Circle Corporation\'s president would like to have an analysis of variable and fixed manufacturing overhead costs budgeted and incurred for the month of August. Three machine hours per unit is the standard allowed for machine hours and units were projected to be produced in August. Budgeted variable and fixed manufacturing overhead costs for the month were $ and $ respectively. During August, machine hours were actually used to produce units of product. Actual variable and fixed manufacturing overhead for the month were $ and $ respectively.

a Compute the variable manufacturing overhead spending and efficiency variances for the month of August.

b Compute the fixed overhead budget variance and the volume variance for the month of August.