Answer:
1. Budgeted direct labor cost = Average wage rate for direct labor * Budgeted direct labor hours
Budgeted direct labor cost = $30 * 23,000
Budgeted direct labor cost = $690,000
Overhead rate = Budgeted overhead costs/Budgeted direct labor cost
Overhead rate = $345,000 / $690,000
Overhead rate = 0.5
Overhead rate = 50%
2. Applied Overhead = Direct labor cost * Overhead rate
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                     Job 39    Job 40    Job 41   Job 42
Beginning balance     $26,200   $32,800   $16,700   $0
Material requisitioned   $18,000    $21,000   $8,400   $13,300
Direct labor cost       $9,100     $18,100    $3,050   $4,200
Applied Overhead      $4,550    $9,050    $1,525    $2,100
Total Cost             $57,850   $80,950  $29,675   $19,600
3. Budgeted direct labor cost = Average wage rate for direct labor * Budgeted direct labor hours
Budgeted direct labor cost = $20 * 23,000
Budgeted direct labor cost = $460,000
Overhead rate = Budgeted overhead costs/Budgeted direct labor cost
Overhead rate = $345,000 / $460,000
Overhead rate = 0.75
Overhead rate = 75%