Thomas Textiles Corporation began November with a budget for 60,000 hours of production in the Weaving Department. The department has a full capacity of 75,000 hours under normal business conditions. The budgeted overhead at the planned volumes at the beginning of November was as follows:

Variable overhead.................$450,000
Fixed overhead........................262,500
Total........................................$712,500 

The actual factory overhead was $725,000 for November. The actual fixed factory overhead was as budgeted. During November, the Weaving Department had standard hours at actual production volume of 64,500 hours.

a. Determine the variable factory overhead controllable variance.

b. Determine the fixed factory overhead volume variance.