Andy Corporation's Department 1 has the following standard and budgeted figures for the product it manufactures: (look at the picture below)

Hours required per unit - 2-1/2 hours Std. variable overhead rate - P4 per hour Budgeted fixed overhead - P20,000 Normal capacity - 10,000 hrs. P20, 000 Std. fixed overhead rate 10,000 - P2 per hour. During April, the department produced 5,000 unite of product using 13,000 hours. Actual factory overhead cost incurred during the month totalled P78 , 000. Required: 1. Compute the total overhead variance. 2. Analyze the variance using the (a) two-variance method, (b) three- variance method and (c) four-variance method