Answer:
1. 4,200
2. $12,810
3. -$3,090 Unfavorable
4. a. $265 Favorable
b. -$3,355 Unfavorable
Explanation:
The computation of given question is shown below:-
1. Standard labor-hours
Standard labor-hours = Shipped items × Direct labor-hours
= 140,000 × 0.03
= 4,200
2. Standard variable overhead cost allowed
Standard variable overhead cost allowed = Standard variable Overhead rate per hour × Standard labor-hours
= $3.05 × 4,200
= $12,810
3. Variable overhead spending variance
Variable overhead spending variance = Standard variable overhead for actual output - Actual variable Overhead
= $12,810 - $15,900
= -$3,090 Unfavorable
4. a. Variable overhead rate variance
Variable overhead rate variance = (Actual hours × Standard rate per hour) - Actual variable Overhead
= (5,300 × $3.05) - $15,900
= $16,165 - $15,900
= $265 Favorable
b. Variable overhead efficiency variance
Variable overhead efficiency variance = Standard rate per hour × (Standard hours - Actual hours)
= $3.05 × ( 4,200 - 5,300)
= $3.05 × -$1,100
= -$3,355 Unfavorable