The following information relates to manufacturing overhead for the Chapman Company:

Standards:
Total fixed factory overhead - $450,000
Estimated production - 25,000 units (100% of normal capacity)
Overhead rates are based on machine hours.
Standard hours allowed per unit produced - 2
Fixed overhead rate - $9.00 per machine hour
Variable overhead rate - $3.50 per hour

Actual:
Fixed factory overhead - $450,000
Production - 24,000 units
Variable overhead - $170,000

Required:
(a) Compute the fixed factory overhead volume variance
(b) Compute the variable factory overhead controllable variance.
(c) Compute the total factory overhead cost variance.