A contractor intends to bid on a job installing 30 airport security systems. Bec

Question

A contractor intends to bid on a job installing 30 airport security systems. Because this will be a new line of work for the contractor, he believes there will be a learning effect for the job. After reviewing time records from a similar type of activity, the contractor is convinced that an 85 percent curve is appropriate. He estimates that the first job will take his crew eight days to install.

How many days should the contractor budget for

a. The first 10 installations? (Do not round intermediate calculations. Round your final answer to 3 decimal places.)

Number of days             

b. The second 10 installations? (Do not round intermediate calculations. Round your final answer to 3 decimal places.)

Number of days             

c. The final 10 installations? (Do not round intermediate calculations. Round your final answer to 3 decimal places.)

Number of days            

Explanation / Answer

(a) Number of days = 56.928 (b) Number of days = 42.288 (c) Number of days = 37.512 Workings: Total time required for a number of activities = Time required for first activity X Total time factor Tn = T1 X Total time factor Learning curve = 85% Number of security systems to be installed = 30 (a) Computation of number of days the contractor shall budget for first 10 installations: T10 = 8 X 7.116 = 56.928 days Number of days = 56.928 (b) Computation of number of days the contractor shall budget for next 10 installations: Time required for total 20 installations: T20 = 8 X 12.402 = 99.216 days Time required for next 10 installations = Time required for total 20 installations - Time required for first 10 installations = T20 - T10 = 99.216 days - 56.928 days = 42.288 days Number of days = 42.288 (c) Computation of number of days the contractor shall budget for final 10 installations: Time required for total 30 installations: T30 = 8 X 17.091 = 136.728 days Time required for final 10 installations = Time required for total 30 installations - Time required for first 20 installations = T30 - T20 = 136.728 days - 99.216 days = 37.512 days

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