Variable overhead rate = $360,000 / 120,000 = $3.00 per direct labor hour
Variable overhead applied to production = $3.00 × 110,000 = $330,000
Variable overhead spending variance = $328,000 − ($3.00 × 115,000) = $17,000 F
Variable overhead efficiency variance
= ($3.00 × 115,000) − ($3.00 × 110,000)
Total variable overhead variance = $17,000 F + $15,000 U = $2,000 F