Norwall company's variable manufacturing overhead should be $3.00 per standard machine-hour and its fixed manufacturing overhead should be $300,000 per month. the following information is available for a recent month: a. the denominator activity of 60,000 machine-hours is used to compute the predetermined overhead rate. b. at the 60,000 standard machine-hours level of activity, the company should produce 40,000 units of product. c. the company’s actual operating results were: number of units produced 42,000 actual machine-hours 64,000 actual variable manufacturing overhead cost $ 185,600 actual fixed manufacturing overhead cost $ 302,400