Rubble, Inc. produced 1,120 backpacks, the company's product in 2020 . The standard cost was 3 yards of cloth at a standard cost of $0.90 per yard. The accounting records show that 2,600 yards of cloth were used, and the company paid $1.15 per yard. Standard time to make the backpacks was 2 direct labor hours per unit at a standard rate of $9.90 per direct labor hours. Employees worked a total of 1,500 hours and were paid $9.15 per hour. Calculate the direct labor cost variance