Answer:
Variable rate = 20000 /20000 = $1 per DLH
Fixed rate = 30000/20000 = $1.5 per DLH
Predetermined overhead rate = Variable rate + Fixed rate
Predetermined overhead rate = 2.5
a. Predetermined overhead rate = Estimated total fixed + variable overhead / Estimated level of activity
2.5 = (20,000 + 30,000] / Estimated level of activity
2.5 = 50,000 / Estimated level of activity
Estimated level of activity = 50,000 /2.5
Estimated level of activity = 20,000 Direct labor hours
b. Standard hours = Number of actual output * Standard hours per unit
Standard hours = 11,500 units * 2 hours
Standard hours = 23,000 hours
c. Variable overhead spending variance = Actual variable cost - [Actual hours *SR]
= 22500 - [22000*1]
= 22500 -22000
= 500 U
d. Variable overhead efficiency variance =SR[AH-SH allowed for actual output]
= 1*[22000 - (11500 units * 2)]
= 1*[22000 - 23000]
= 1*1000
= 1000 F
e. Fixed overhead budget variance = Actual fixed cost -budgeted fixed overhead cost
= 31000- 30000
= 1000 U
f. Fixed overhead volume variance = Budgeted fixed overhead cost - Standard fixed overhead cost allowed for actual output
= 30000 - [11500 units* 2SH*1.5 rate]
= 30000 - 34500
= 4500 F