Answer:
Budget variance= $10,000 unfavorable
Explanation:
The fixed cost variance is the difference between the actual fixed cost and the absorbed fixed cost.
The absorbed fixed cost = POAR ×  actual production unit
        POAR =budgeted fixed cost/Budgeted production units
             = $80,000,/  40,000
           = $2 per unit
POAR - Predetermined overhead absorption rate
Absorbed overhead= $2 × 40,000 = $80,000
Budget Variance = Â $70,000 -$80,000
         = $10,000 unfavorable