Taskmaster enterprises employs a standard cost system in which direct materials inventory is carried at standard cost. taskmaster has established the following standards for the prime costs of one unit of product. standard standard standard quantity price cost direct materials 7 pounds $ 1.60 per pound $ 11.20 direct labor .30 hour $ 10.00 per hour 3.00 $ 14.20 during november, taskmaster purchased 154,000 pounds of direct materials at a total cost of $277,200. the total factory wages for november were $52,000, 80% of which were for direct labor. taskmaster manufactured 21,000 units of product during november using 132,000 pounds of direct materials and 5,000 direct labor hours. what is the direct materials efficiency (quantity) variance for november?