Glyn Manufacturing Company has budgeted normal monthly capacity of 5,000 labor hours with standard production of 4,000 units at this capacity. Standard costs are

Direct materials 2 kilos @ P1.00

Direct labor P8 per hour

Factory overhead at normal capacity;

Fixed expenses P5,000

Variable expenses P1.50 per direct labor hour

During January, actual factory overhead total P11,250 (P6,000 variable and P5,250 fixed) and 4,500 direct labor hours cost P33.750. Production during the month was 3,500 units using 7,200 kilos of materials at a cost of P1.02 per kilo.

Required: Compute the overhead variance.