Answer: $1,695 Unfavorable
Step-by-step explanation:
Efficiency variance = Standard variable overhead cost per hour * (Standard hours - Actual hours)
Standard variable overhead cost per hour = Budgeted variable overhead / Budgeted machine hours
= (21,560 + 20,720) / 4,400 hours
= $11.30 per hour
Efficiency variance = 11.30 * (4,310 - 4,460)
= 11.30 * -150
= -$1,695
= $1,695 Unfavorable