A popular product manufactured by Party-On! is a festively decorated punch bowl. The companys standard cost system calls for 0.10 hours of direct labor per bowl, at a standard wage rate of $16. During September, Party-On! produced 1,200 of these bowls at an actual direct labor cost of $2,160 for 180 direct labor hours. a. What is the actual wage rate per hour? b. Compute the labor rate and efficiency variances for the month.