A time study involving the preparation of hamburgers at Bill’s fast-food restaurant used the snap-back method to obtain the data (in minutes) shown below. Allowances typically constitute 15% of normal time.  The schedule calls for 300 hamburgers to be prepared during the lunch rush. If each part-time employee works 190 minutes per day, how many employees will be needed? Observation Work Element 1 2 3 4 5 t F RF NT 1.      Prepare Patty 0.45 0.41 0.50 0.48 0.36   1 0.9   2.      Cook First side 0.85 0.81 0.77 0.89 0.83   1 1.2   3.      Flip, press, and cook the other side 0.60 0.55 0.59 0.58 0.63   1 1.2   4.      Assemble 0.31 0.24 0.27 0.26 0.32   1 1.0   Show work

Practical Management Science
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ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
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A time study involving the preparation of hamburgers at Bill’s fast-food restaurant used the snap-back method to obtain the data (in minutes) shown below. Allowances typically constitute 15% of normal time.  The schedule calls for 300 hamburgers to be prepared during the lunch rush. If each part-time employee works 190 minutes per day, how many employees will be needed?

Observation

Work Element

1

2

3

4

5

t

F

RF

NT

1.      Prepare Patty

0.45

0.41

0.50

0.48

0.36

 

1

0.9

 

2.      Cook First side

0.85

0.81

0.77

0.89

0.83

 

1

1.2

 

3.      Flip, press, and cook the other side

0.60

0.55

0.59

0.58

0.63

 

1

1.2

 

4.      Assemble

0.31

0.24

0.27

0.26

0.32

 

1

1.0

 

Show work 

Expert Solution
Step 1: Introduction

Given Information:

Allowance = 15% of normal time.

Time = 190 minutes per day.

Production required = 300 hamburgers.

 

  Observation

Work Element

1

2

3

4

5

t

F

RF

NT

1.      Prepare Patty

0.45

0.41

0.50

0.48

0.36

 

1

0.9

 

2.      Cook First side

0.85

0.81

0.77

0.89

0.83

 

1

1.2

 

3.      Flip, press, and cook the other side

0.60

0.55

0.59

0.58

0.63

 

1

1.2

 

4.      Assemble

0.31

0.24

0.27

0.26

0.32

 

1

1.0

 
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