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Springfield's city council wants to minimize the city's average yearly

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Springfield's city council wants to minimize the city's average yearly [#permalink]

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New post 12 May 2018, 20:23
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A
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C
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E

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  25% (medium)

Question Stats:

79% (01:13) correct 21% (01:14) wrong based on 38 sessions

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Springfield's city council wants to minimize the city's average yearly expenditures on its parking meters and so is considering replacing the coin-operated meters currently in use with roadside kiosks at which parking slips can be purchased via credit card. Since many of the coin-operated meters require replacement, the costs associated with the conversion to credit card kiosks would be minimal.

Which of the following would it be most useful to know in determining whether switching to roadside kiosks would be likely to help minimize Springfield's yearly maintenance costs?
A) Whether the expected service life of roadside kiosks is at least as long as that of the currently used coin-operated meters
B) Whether any cities have switched from coin-operated meters in their parking meters to new devices other than roadside kiosks
C) Whether the company from which Springfield currently buys coin-operated meters for traffic signals also sells roadside kiosks
D) Whether Springfield's city council plans to increase the number of paid parking spaces in Springfield
E) Whether the crews that currently replace coin-operated meters in Springfield know how to replace the existing fixtures with roadside kiosks

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Re: Springfield's city council wants to minimize the city's average yearly [#permalink]

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New post 12 May 2018, 22:32
A) Whether the expected service life of roadside kiosks is at least as long as that of the currently used coin-operated meters

- if the service life is shorter then the maintenance cost would obviously increase. Hold

B) Whether any cities have switched from coin-operated meters in their parking meters to new devices other than roadside kiosks
- irrelevant

C) Whether the company from which Springfield currently buys coin-operated meters for traffic signals also sells roadside kiosks
- irrelevant

D) Whether Springfield's city council plans to increase the number of paid parking spaces in Springfield

- it would only affect the initial investment. But since, we are more concerned about maintenance costs/kiosk we can eliminate it.

E) Whether the crews that currently replace coin-operated meters in Springfield know how to replace the existing fixtures with roadside kiosks
- irrelevant

IMO A.

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Re: Springfield's city council wants to minimize the city's average yearly [#permalink]

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New post 13 May 2018, 00:15
OA should be A. It’s another version of the street light problem .


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Re: Springfield's city council wants to minimize the city's average yearly   [#permalink] 13 May 2018, 00:15
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Springfield's city council wants to minimize the city's average yearly

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