The following direct materials variance computations are incomplete: Price variance = ($? $10) 9,600 kg

Question:

The following direct materials variance computations are incomplete:
Price variance = ($? − $10) × 9,600 kg = $4,800 U
Efficiency variance = (? − 10,400 kg) × $10 =? F
Flexible budget variance = $?
Requirement
Fill in the missing values and identify the flexible budget variance as favourable or unfavourable.