Porter Manufacturing Company uses a standard cost accounting system. In 2011, the company produced 20,000 units. Each unit took several pounds of direct materials and 3 standard hours of direct labor at a standard hourly rate of $10. Normal capacity was 50,000 direct labor hours. During the year, 52,472 pounds of raw materials were purchased at $1.5 per pound. All materials purchased were used during the year. If the direct labor quantity variance was $5,400 unfavorable, what were the direct labor hours actually worked