A. Sound of Thu Process account during April 2018: nder Company has a job costing system. The following items appeared in the Work-in- April 1, 2018, balance s 20,000 Materials placed into production Direct labor (4,000 hours) Factory overhead applied Cost of goods manufactured $120,000 $ 96,000 $400,000 $ 16,000 April 30, 2018, balance Sound of Thunder applies overhead to production on the basis of direct labor hours. Job XX, the only jolb in process on April 30, has been charged $10,600 materials cost and has 100 labor hours of direct labor time assigned to it. Required: a. Determine the predetermined factory overhead rate for Sound of Thunder Company. b. Determine the amounts of materials, direct labor, and factory overhead included in the April 30, 2018, work in process. c. Determine the amount of materials placed into production during April 2018