1.  ABC Co. manufactures desks in the finishing and assembly process. Desks are  manufactured in 20 unit batches.  The finishing time is 12 minutes and the assembly  time is 8 minutes per desk.  It takes 20 minutes to move a batch of desks from   finishing to assembly.                           (a) Compute the value added, non-value added, and total lead time of this process.                                 (b) Compute the value-added ratio (round to one decimal place if necessary).                                   (c) A study was conducted resulting in the following changes:       Desks made in 30 unit batches           Finishing time reduced to 8 minutes         Move time reduced to 16 minutes                         Compute the total lead time and value added ratio after the process changes:

Cornerstones of Cost Management (Cornerstones Series)
4th Edition
ISBN:9781305970663
Author:Don R. Hansen, Maryanne M. Mowen
Publisher:Don R. Hansen, Maryanne M. Mowen
Chapter12: Activity-based Management
Section: Chapter Questions
Problem 2CE: Assume that at the beginning of 20x2, Cicleta trained the 2 assembly workers in a new approach that...
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1.  ABC Co. manufactures desks in the finishing and assembly process. Desks are 
manufactured in 20 unit batches.  The finishing time is 12 minutes and the assembly 
time is 8 minutes per desk.  It takes 20 minutes to move a batch of desks from  
finishing to assembly.          
               
(a) Compute the value added, non-value added, and total lead time of this process.
               
               
(b) Compute the value-added ratio (round to one decimal place if necessary).  
               
               
(c) A study was conducted resulting in the following changes:    
  Desks made in 30 unit batches        
  Finishing time reduced to 8 minutes      
  Move time reduced to 16 minutes      
               
  Compute the total lead time and value added ratio after the process changes:
               
               
2.   Johnny Co. operates under the lean philosophy.  As a result, it has a production cell
for its power drills.  The conversion costs for 4,000 hours of production is budgeted for
the year at $2,400,000.  During January, 2,000 units were started and completed.  Each 
drill requires 12 minutes of cell production time.      
               
(a) Determine the budgeted cell conversion costs per hour    
               
(b) Determine the conversion manufacturing costs per unit    
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