Landen Corporation uses a job-order costing system. At the beginning of the year, the company made the following estimates: During the year. Job 550 was started and completed. The following information Is available with respect to this job: Assume that Landen has historically used a plantwide predetermined overhead rate with direct labor-hours as the allocation Under this approach: a. Compute the plantwide predetermined overhead rate. b. Compute the total manufacturing cost of Job 550 c If Landen uses a markup percentage of 200% of its total manufacturing cost, what selling price would it establish for Job 550? Assume that Landen's controller believes that machine-hours is a better allocation base than direct labor-hours. Under this approach: a. Compute the plantwide predetermined overhead rate. b. Compute the total manufacturing cost of Job 550. c. If Landen uses a markup percentage of 200% of its total manufacturing cost, what selling price would it establish for Job 550? (Round your intermediate calculations to 2 decimal places. Round your Predetermined Overhead Rate answers to 2 decimal places and all other answers to the nearest whole dollar.)