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Operations Management: Processes and Supply Chains, 12th Edition
book

Operations Management: Processes and Supply Chains, 12th Edition

by Lee J. Krajewski, Manoj K. Malhotra, Larry P. Ritzman
January 2018
Intermediate to advanced content levelIntermediate to advanced
480 pages
236h 9m
English
Pearson
Content preview from Operations Management: Processes and Supply Chains, 12th Edition

Solution

  1. We use the learning curve formulas to calculate the time required for the 38th unit:

     b= log r log 2 = log 0.8 log 2 = 0.09691 0.30103 =0.322   k n = k 1 n b =( 1,000 hours ) ( 38 ) 0.322  =( 1,000 hours )( 0.3099 )=310 hours

  2. Table I.1 gives the data needed to calculate the cumulative number of hours through each month of the schedule. Table I.2 shows these calculations.

    Table I.2 Cumulative Total Hours

    Month

    Cumulative Units

    Cumulative Average Time per Unit

    Cumulative Total Hours/Month for All Units

    1

     3

    1,000( 0.83403 )=834.03 hr/u

    ( 834.03 hr/u )( 3u )=2,502.1 hr

    2

    10

    1,000( 0.63154 )=631.54 hr/u

    ( 631.54 hr/u )( 10u )=6,315.4 hr

    3

    20

    1,000(

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Publisher Resources

ISBN: 9780134741062