wisteria co produces snowboards and uses a standard cost system variable overhead is applied using direct labor hours standards allowed for each unit are 53 hours of labor at a standard variable overhead rate of $800 during december, wisteria co produced 3,000 snowboards materials purchases totaled 21,600 pounds at a total cost of $224,780 materials usage totaled 20,980 pounds payroll totaled $183,730 for 17,100 hours worked variable overhead incurred totaled $133,730
 

a. Calculate the variable overhead rate variance. (Do not round your intermediate calculations. Indicate the effect of variance by selecting "Favorable", "Unfavorable", or "None" for no effect (i.e., zero variance).) Rate Variance b. Calculate the variable overhead efficiency variance. (Indicate the effect of variance by selecting "Favorable", "Unfavorable", or "None" for no effect (i.e., zero variance).) Efficiency Variance