Answer and Explanation:
Particulars Amount
Standard variable manufacturing overhead cost for march $960
Standard variable manufacturing overhead rate per direct labor hour $2
Standard direct labor hours for march
=960/2
= $ 480
Standard direct labor rate per hour
=$ 5,040/$480
= $ 10.5
The labor efficiency variance
Actual Cost per unit of back pack production
=(9,120+5,040+960)/(400)
=15,120/400
=$ 37.8
Total Number of produced Back packs 400
Total Actual cost of production $ 15,120
Less: Actual cost of materials $5,520
Actual cost of manufacturing Overhead 2,620
Actual cost of Direct Labor 6,980
Labor efficiency varaince = 5040-6980 = -$ 1940
Variable overhead rate variance=(Actual Hour*Actual Rate)-(Actual Hour of input*Standard Rate)
=(2620*2)
= $ 5240
Variable overhead rate variance = $ 5240
