Pitree, In, uses standard cost system. Overhead cost information for product WK for the month of May is as follows:

Total overhead cost incurred                                           P12,600

Fixed overhead budgeted                                                 P 3,300

Total standard overhead rate per direct labor hour             P4.00  

Variable overhead rate per direct labor hours                    P3.00

Standard hours allowed for actual production                   3,500

What is the overall overhead variance?