Chapter 2: Problem 6
What is a cost driver? Give one example.
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Chapter 2: Problem 6
What is a cost driver? Give one example.
These are the key concepts you need to understand to accurately answer the question.
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Define product cost. Describe three different purposes for computing product costs.
What is the relevant range? What role does the relevant-range concept play in explaining how costs behave?
Computing and interpreting manufacturing unit costs. Minnesota Office Products (MOP) produces three different paper products at its Vaasa lumber plant: Supreme, Deluxe, and Regular. Each product has its own dedicated production line at the plant. It currently uses the following three-part classification for its manufacturing costs: direct materials, direct manufacturing labor, and manufacturing overhead costs. Total manufacturing overhead costs of the plant in July 2017 are \(\$ 150\) million (\$15 million of which are fixed). This total amount is allocated to each product line on the basis of the direct manufacturing labor costs of each line. Summary data (in millions) for July 2017 are as follows: $$\begin{array}{lccc} & \text { Supreme } & \text { Deluxe } & \text { Regular } \\ \hline \text { Direct material costs } & \$ 89 & \$ 57 & \$ 60 \\ \text { Direct manufacturing labor costs } & \$ 16 & \$ 26 & \$ 8 \\ \text { Manufacturing overhead costs } & \$ 48 & \$ 78 & \$ 24 \\ \text { Units produced } & 125 & 150 & 140 \end{array}$$ 1\. Compute the manufacturing cost per unit for each product produced in July 2017 . 2\. Suppose that, in August 2017 , production was 150 million units of Supreme, 190 million units of Deluxe, and 220 million units of Regular. Why might the July 2017 information on manufacturing cost per unit be misleading when predicting total manufacturing costs in August \(2017 ?\)
Total and unit cost, decision making. Gayle's Glassworks makes glass flanges for scientific use. Materials cost \(\$ 1\) per flange, and the glass blowers are paid a wage rate of \(\$ 28\) per hour. A glass blower blows 10 flanges per hour. Fixed manufacturing costs for flanges are \(\$ 28,000\) per period. Period (nonmanufacturing) costs associated with flanges are \(\$ 10,000\) per period and are fixed. 1\. Graph the fixed, variable, and total manufacturing cost for flanges, using units (number of flanges) on the \(x\) -axis. 2\. Assume Gayle's Glassworks manufactures and sells 5,000 flanges this period. Its competitor, Flora's Flasks, sells flanges for \(\$ 10\) each. Can Gayle sell below Flora's price and still make a profit on the flanges? 3\. How would your answer to requirement 2 differ if Gayle's Glassworks made and sold 10,000 flanges this period? Why? What does this indicate about the use of unit cost in decision making?
Labor cost, overtime, and idle time. David Letterman works in the production department of Northeast Plastics (NEP) as a machine operator. David, a long- time employee of NEP, is paid on an hourly basis at a rate of \(\$ 24\) per hour. David works five 8 -hour shifts per week Monday-Friday (40 hours). Any time David works over and above these 40 hours is considered overtime for which he is paid at a rate of time and a half \((\$ 36\) per hour). If the overtime falls on weekends, David is paid at a rate of double time (\$48 per hour). David is also paid an additional \(\$ 24\) per hour for any holidays worked, even if it is part of his regular 40 hours. David is paid his regular wages even if the machines are down (not operating) due to regular machine maintenance, slow order periods, or unexpected mechanical problems. These hours are considered "idle time." During December David worked the following hours: Included in the total hours worked are two company holidays (Christmas Eve and Christmas Day) during Week \(4 .\) All overtime worked by David was Monday- Friday, except for the hours worked in Week 3 ; all of the Week 3 overtime hours were worked on a Saturday. 1\. Calculate (a) direct manufacturing labor, (b) idle time, (c) overtime and holiday premium, and (d) total earnings for David in December. 2\. Is idle time and overtime premium a direct or indirect cost of the products that David worked on in December? Explain.
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