Taveras Corporation is currently operating at 50% of its available manufacturing capacity. It uses a job-order costing system with a plantwide predetermined overhead rate based on machine-hours. At the beginning of the year, the company made the following estimates: Machine-hours required to support estimated production 215,000 Fixed manufacturing overhead cost $ 3,655,000 Variable manufacturing overhead cost per machine-hour $ 2.00 Required: 1. Compute the plantwide predetermined overhead rate. 2. During the year, Job P90 was started, completed, and sold to the customer for $3,500. The following information was available with respect to this job: Direct materials $ 1,610 Direct labor cost $ 1,155 Machine-hours used 82 Compute the total manufacturing cost assigned to Job P90.

1. Plant wide predetermined overhead rate is $19 per hour

2. Manufacturing cost assigned to job P90 is $4,323

Explanation:

1. In order to calculate the predetermined overhead rate based on machine hours expended, the fixed overhead cost would have to be divided by the machine hours and then add up variable overhead cost per machine hour

= [ Fixed manufacturing overhead / Machine hours required to support production ] + Variable manufacturing overhead cost per machine hour

= [$3,655,000/215,000] + $2

= $17 + $2

= $19 per hour

2. Manufacturing cost of job P90

Direct materials

$1,610

Direct labor cost

$1,155

Overhead 82 machine hours × $19

$1,558

Total cost

$4,323

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