Brief Exercise 5 Colby Company estimates that annual manufacturing overhead costs will be $600,000. Estimated annual operating activity bases are: direct labor cost $460,000, direct labor hours 40,000 and machine hours 80,000. The actual manufacturing overhead cost T Ws 61,00o and thetnrci hoursctual for the year was $601,000 and the actual direct labor cost for the year was $456,000. Actual direct labor hours tataled 40,200 and machine hours totaled 79,00o. Colby applies overhead based on direct laber hours. Compute the predetermined overhead rate and determine the amount of manufacturing overhead applied, Determine if overhead is over- or underapplied and the amount. Overhead rate per direct labor hour ufacturing overhead