Answer:
$171 Favorable
Step-by-step explanation:
Actual Variable Overhead Rate = Actual variable overhead cost / Actual direct labor-hours used
Actual Variable Overhead Rate = $9,531 / 2,310
Actual Variable Overhead Rate = $4.125974
Variable overhead rate variance = (Standard rate - Actual rate) * Actual Direct labor hours
Variable overhead rate variance = ($4.20 - $4.125974) * 2310
Variable overhead rate variance = $0.074026 * 2310
Variable overhead rate variance = $171 Favorable