The Hamilton Company planned to produce 150,000 units during the current year. At that production volume, the company estimated that its overhead costs would amount to $637,500 Required: 1) Calculate the predetermined overhead rate per unit based on expected production, 2) Assume that actual output totaled only 145,000 units but the actual overhead cost incurred was $637,500 as expected. How much overhead cost was allocated to work in process? By how much was overhead overapplied or underapplied during the period? (Be sure to indicate whether over or under applied) 3) Assume that actual output totaled 150,000 units as expected but actual overhead costs amounted to 5600.000. How much overhead cost was allocated to work in process? By how much was overhead overapplied or underapplied during the period? (Be sure to indicate whether over- or under-applied) 4) Summarize the conditions that lead to over or under-applied overhead