Answer and Explanation:
The computation is shown below;
1.
Total hours for job A - 500
= Direct labor ÷direct labor wage rate
= $150 ÷ $15
= 10
Total over head cost = overhead cost per labor hours × no. of labor hours
= $20 × 10
= $200
total manufacturing cost = Direct materials cost + Direct labor cost + Total over head cost
= $280 + $150 + $200
= $630
2.
Cost assigned to each unit
= total manufacturing cost ÷ number of units
= $630 ÷ 70
= $9