Chapter 19: Problem 11
Distinguish between customer-response time and manufacturing cycle time.
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Chapter 19: Problem 11
Distinguish between customer-response time and manufacturing cycle time.
These are the key concepts you need to understand to accurately answer the question.
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The Tristan Corporation sells 250,000 V262 valves to the automobile and truck industry. Tristan has a capacity of 150,000 machine-hours and can produce two valves per machine-hour. V262's contribution margin per unit is 7. Tristan sells only 250,000 valves because 50,000 valves (20% of the good valves need to be reworked. It takes 1machine-hour to rework two valves, so 25,000 hours of capacity are used in the rework process. Tristan's rework costs are 550,000 dollar Rework costs consist of the following: Direct materials and direct rework labor (variable costs): 5 dollar per unit Fixed costs of equipment, rent, and overhead allocation: 6 dollar per unit Tristan's process designers have developed a modification that would maintain the speed of the process and ensure 100% quality and no rework. The new process would cost 538,000 dollar per year. The following additional information is available: The demand for Tristan's V262 valves is 400,000 per year. The Colton Corporation has asked Tristan to supply 27,000 T971 valves (another product) if Tristan implements the new design. The contribution margin per \(\mathrm{T} 971\) valve is \(\$ 12 .\) Tristan can make one \(\mathrm{T} 971\) valve per machine-hour with \(100 \%\) quality and no rework. 1\. Suppose Tristan's designers implement the new design. Should Tristan accept Colton's order for 27,000 T971 valves? Show your calculations. 2\. Should Tristan implement the new design? Show your calculations. 3\. What nonfinancial and qualitative factors should Tristan consider in deciding whether to implement the new design?
Six Sigma is a continuous quality improvement methodology that is designed to promote: 1\. Improvements for existing products and business processes. 2\. Development of new products or business processes. 3\. Both existing product/process improvement and new product process development. 4\. Statistical evaluation of critical success factors.
SpeedPrint manufactures and sells 18,000 high-technology printing presses each year. The variable and fixed costs of rework and repair are as follows: SpeedPrint's current presses have a quality problem that causes variations in the shade of some colors. Its engineers suggest changing a key component in each press. The new component will cost 70 more than the old one. In the nextyear, however, SpeedPrint expects that with the new componentitwill (1) save 14,000 hours of rework, (2) save 850 hours of customer support, (3) move 225 fewer loads, (4) save 8,000 hours of warranty repairs, and (5) sell an additional 140 printing presses, for a total contribution margin of \$1,680,000 SpeedPrint believes that even as it improves quality, it will not be able to save any of the fixed costs of re work or repair. SpeedPrint uses a 1 -year time horizon for this decision because it plans to introduce a new press a t the end of the year. 1\. Should SpeedPrint change to the new component? Show your calculations. 2\. Suppose the estimate of 140 additional printing presses sold is uncertain. What is the minimum number of additional printing presses that SpeedPrint needs to sell to justify adopting the new component? 3\. What other factors should managers at SpeedPrint consider when making their decision about chang ing to a new component?
"When evaluating a company's performance on the time dimension, managers should only consider financial measures." Do you agree? Explain.
The Sandstone Corporation uses an injection molding machine to make a plastic product, \(Z 35\), after receiving firm orders from its customers. Sandstone estimates that it will receive 60 orders for \(Z 35\) during the coming year. Each order of \(Z 35\) will take 100 hours of machine time. The annual machine capacity is 8,000 hours. 1\. Calculate (a) the average amount of time that an order for \(Z 35\) will wait in line before it is processed and (b) the average manufacturing cycle time per order for Z35. 2\. Sandstone is considering introducing a new product, Y21. The company expects it will receive 30 orders of \(\mathrm{Y} 21\) in the coming year. Each order of \(\mathrm{Y} 21\) will take 40 hours of machine time. Assuming the demand for \(Z 35\) will not be affected by the introduction of \(Y 21\), calculate (a) the average waiting time for an order received and (b) the average manufacturing cycle time per order for each product, if Sandstone introduces Y21.
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