Sound Tek Inc. manufactures electronic stereo equipment. The manufacturing process includes printed circuit (PC) board assembly, final assembly, testing, and shipping. In the PC board assembly operation, a number of individuals are responsible for assembling electronic components into printed circuit boards. Each operator is responsible for soldering components according to a given set of instructions. Operators work on batches of 50 printed circuit boards. Each board requires 4 minutes of board assembly time. After each batch is completed, the operator moves the assembled boards to the final assembly area. This move takes 9 minutes to complete. The final assembly for each stereo unit requires 19 minutes and is also done in batches of 50 units. A batch of 50 stereos is moved into the test building, which is across the street. The move takes 20 minutes. Before conducting the test, the test equipment must be set up for the particular stereo model. The test setup requires 30 minutes. The units wait while the setup is performed. In the final test, the 50-unit batch is tested one at a time. Each test requires 11 minutes. The completed batch, after all testing, is sent to shipping for packaging and final shipment to customers. A complete batch of 50 units is sent from testing to shipping. The Shipping Department is located next to testing. Thus, there is no move time between these two operations. Packaging and labeling requires 12 minutes per unit. 1. Determine the amount of value-added and non-value-added lead time and the value-added ratio in this process for an average stereo unit in a batch of 50 units. Categorize the non-value-added time into wait and move time. Round the percentage to one decimal place. Value-added lead time fill in the blank 1 min. Non-value-added lead time: Wait time lead time fill in the blank 2 min. Move time lead time fill in the blank 3 min. Total non-value-added lead time fill in the blank 4 min. Total lead time fill in the blank 5 min. Value-added ratio (as a percent) fill in the blank 6%

Sound Tek Inc. manufactures electronic stereo equipment. The manufacturing process includes printed circuit (PC) board assembly, final assembly, testing, and shipping. In the PC board assembly operation, a number of individuals are responsible for assembling electronic components into printed circuit boards. Each operator is responsible for soldering components according to a given set of instructions. Operators work on batches of 50 printed circuit boards. Each board requires 4 minutes of board assembly time. After each batch is completed, the operator moves the assembled boards to the final assembly area. This move takes 9 minutes to complete. The final assembly for each stereo unit requires 19 minutes and is also done in batches of 50 units. A batch of 50 stereos is moved into the test building, which is across the street. The move takes 20 minutes. Before conducting the test, the test equipment must be set up for the particular stereo model. The test setup requires 30 minutes. The units wait while the setup is performed. In the final test, the 50-unit batch is tested one at a time. Each test requires 11 minutes. The completed batch, after all testing, is sent to shipping for packaging and final shipment to customers. A complete batch of 50 units is sent from testing to shipping. The Shipping Department is located next to testing. Thus, there is no move time between these two operations. Packaging and labeling requires 12 minutes per unit. 1. Determine the amount of value-added and non-value-added lead time and the value-added ratio in this process for an average stereo unit in a batch of 50 units. Categorize the non-value-added time into wait and move time. Round the percentage to one decimal place. Value-added lead time fill in the blank 1 min. Non-value-added lead time: Wait time lead time fill in the blank 2 min. Move time lead time fill in the blank 3 min. Total non-value-added lead time fill in the blank 4 min. Total lead time fill in the blank 5 min. Value-added ratio (as a percent) fill in the blank 6%

Managerial Accounting

15th Edition

ISBN:9781337912020

Author:Carl Warren, Ph.d. Cma William B. Tayler

Publisher:Carl Warren, Ph.d. Cma William B. Tayler

Chapter13: Lean Manufacturing And Activity Analysis

Section: Chapter Questions

Problem 2PA

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Lead Time

The final assembly for each stereo unit requires 19 minutes and is also done in batches of 50 units. A batch of 50 stereos is moved into the test building, which is across the street. The move takes 20 minutes. Before conducting the test, the test equipment must be set up for the particular stereo model. The test setup requires 30 minutes. The units wait while the setup is performed. In the final test, the 50-unit batch is tested one at a time. Each test requires 11 minutes. The completed batch, after all testing, is sent to shipping for packaging and final shipment to customers. A complete batch of 50 units is sent from testing to shipping. The Shipping Department is located next to testing. Thus, there is no move time between these two operations. Packaging and labeling requires 12 minutes per unit.

1. Determine the amount of value-added and non-value-added lead time and the value-added ratio in this process for an average stereo unit in a batch of 50 units. Categorize the non-value-added time into wait and move time. Round the percentage to one decimal place.

Value-added lead time		fill in the blank 1 min.
Non-value-added lead time:
	Wait time lead time	fill in the blank 2 min.
	Move time lead time	fill in the blank 3 min.
Total non-value-added lead time		fill in the blank 4 min.
Total lead time		fill in the blank 5 min.
Value-added ratio (as a percent)		fill in the blank 6%

Lead Time
Sound Tek Inc. manufactures electronic stereo equipment. The manufacturing process includes printed circuit (PC) board assembly, final assembly, testing,
and shipping. In the PC board assembly operation, a number of individuals are responsible for assembling electronic components into printed circuit boards.
Each operator is responsible for soldering components according to a given set of instructions. Operators work on batches of 50 printed circuit boards. Each
board requires 4 minutes of board assembly time. After each batch is completed, the operator moves the assembled boards to the final assembly area. This
move takes 9 minutes to complete.
The final assembly for each stereo unit requires 19 minutes and is also done in batches of 50 units. A batch of 50 stereos is moved into the test building,
which is across the street. The move takes 20 minutes. Before conducting the test, the test equipment must be set up for the particular stereo model. The
test setup requires 30 minutes. The units wait while the setup is performed. In the final test, the 50-unit batch is tested one at a time. Each test requires 11
minutes. The completed batch, after all testing, is sent to shipping for packaging and final shipment to customers. A complete batch of 50 units is sent from
testing to shipping. The Shipping Department is located next to testing. Thus, there is no move time between these two operations. Packaging and labeling
requires 12 minutes per unit.
1. Determine the amount of value-added and non-value-added lead time and the value-added ratio in this process for an average stereo unit in a batch of
50 units. Categorize the non-value-added time into wait and move time. Round the percentage to one decimal place.
Value-added lead time
65
X min.
Non-value-added lead time:
Wait time lead time
2,871 x min.
Move time lead time
min.
Total non-value-added lead time
min.
Total lead time
min.
Value-added ratio (as a percent)
%
2. Move time in this process could best be reduced by:
a. Doing nothing.
b. Changing the layout from a process orientation to a product orientation.
c. Increasing batch sizes.
d. Eliminating the testing step.
e. Hiring more workers.

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