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# Over the last three years, the city of Las Vegas has grown

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Over the last three years, the city of Las Vegas has grown [#permalink]

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13 Aug 2012, 20:31
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Over the last three years, the city of Las Vegas has grown in population at a rate of six percent per year. Over the same period of time, however, water usage inside the city of Las Vegas is down almost fifteen percent.

Each of the following, if true, could help to explain the simultaneous decline in water usage and increase in population in Las Vegas, EXCEPT:

A.Due to drought awareness campaigns, the average citizen in Las Vegas now uses almost thirty percent less water now than he or she did three years ago.
B.Two years ago, the city instituted a popular new incentive program for citizens to tear out high water consuming lawns and replace them with low water consuming desert landscaping.
C.The city council has proposed a moratorium on the construction of high water consuming golf courses starting in two years.
D.Three years ago a mining company that consumed vast amounts of water operated within the city limits; now that company is out of business.
E.The mayor ordered that all of the city's hundreds of fountains be shut off, reducing water use due to evaporation considerably

This question has again made my head spin..!!! after going through OE, I understood that questions ask us to look for future and not present. A good practice.
this one is from kaplan daily
[Reveal] Spoiler: OA
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Re: Over the last three years, the city of Las Vegas has grown [#permalink]

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16 Aug 2012, 11:40
Can someone provide OE for this question plzz...
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Re: Over the last three years, the city of Las Vegas has grown [#permalink]

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16 Aug 2012, 16:22
Desperate123 wrote:
Can someone provide OE for this question plzz...

Lets check all the options and use POE method to solve this problem. Concentrate on answers, which can explain the decline in water usage.

A. average citizen uses almost thirty percent less water - decline in water usage - Ignore.
B. tear out high water consuming lawns and replace them with low water consuming desert landscaping.- decline in water usage - Ignore.
C.The city council has proposed a moratorium on the construction of high water consuming golf courses starting in two years.
D.mining company is out of business. - decline in water usage - Ignore.
E.city's hundreds of fountains be shut off, reducing water - decline in water usage - Ignore.

C wins based on my comments, Hope it helps!

Cheers!
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Re: Over the last three years, the city of Las Vegas has grown [#permalink]

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17 Aug 2012, 10:20
Capricorn369 wrote:
Desperate123 wrote:
Can someone provide OE for this question plzz...

Lets check all the options and use POE method to solve this problem. Concentrate on answers, which can explain the decline in water usage.

A. average citizen uses almost thirty percent less water - decline in water usage - Ignore.
B. tear out high water consuming lawns and replace them with low water consuming desert landscaping.- decline in water usage - Ignore.
C.The city council has proposed a moratorium on the construction of high water consuming golf courses starting in two years.
D.mining company is out of business. - decline in water usage - Ignore.
E.city's hundreds of fountains be shut off, reducing water - decline in water usage - Ignore.

C wins based on my comments, Hope it helps!

Cheers!

Thanks it helped..
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Re: Over the last three years, the city of Las Vegas has grown [#permalink]

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18 Aug 2012, 00:09
Over the last three years, the city of Las Vegas has grown in population at a rate of six percent per year. Over the same period of time, however, water usage inside the city of Las Vegas is down almost fifteen percent.

Each of the following, if true, could help to explain the simultaneous decline in water usage and increase in population in Las Vegas, EXCEPT:

A.Due to drought awareness campaigns, the average citizen in Las Vegas now uses almost thirty percent less water now than he or she did three years ago.

Here is a good reason water usage has gone done - people are using significantly less water.

B.Two years ago, the city instituted a popular new incentive program for citizens to tear out high water consuming lawns and replace them with low water consuming desert landscaping.

Lawns that require less water could account for the decline in water usage.

C.The city council has proposed a moratorium on the construction of high water consuming golf courses starting in two years.

The key here is that the plan will take effect in two years. Therefore, it cannot account for the decline in water usage. Because this is an EXCEPT question, here is our answer.

D.Three years ago a mining company that consumed vast amounts of water operated within the city limits; now that company is out of business.

A defunct mine company that once used lots of water could account for the decline.

E.The mayor ordered that all of the city's hundreds of fountains be shut off, reducing water use due to evaporation considerably

Another reason for a decline in water usage: fountains have been shut off.
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Re: Over the last three years, the city of Las Vegas has grown [#permalink]

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18 Aug 2012, 01:42
Good question. The city council has "proposed" a moratorium on water consuming golf courses "starting in two years"

Hence, the decline in water uses in last three years is not its effect. It is clear from the words in bold.
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Re: Over the last three years, the city of Las Vegas has grown [#permalink]

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18 Aug 2013, 09:53
Questions says "Each of the following, if true, could help to explain the simultaneous decline in water usage and increase in population in Las Vegas" , so doesn't it mean that apart from one choice among the given 5, the rest should somehow indicate decline in water usage and increase in population happening simultaneously ?
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Re: Over the last three years, the city of Las Vegas has grown [#permalink]

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19 Aug 2013, 06:46
Can someone please indicate the fault in the thinking presented above ?
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Re: Over the last three years, the city of Las Vegas has grown [#permalink]

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19 Aug 2013, 22:41
nick28 wrote:
Questions says "Each of the following, if true, could help to explain the simultaneous decline in water usage and increase in population in Las Vegas" , so doesn't it mean that apart from one choice among the given 5, the rest should somehow indicate decline in water usage and increase in population happening simultaneously ?

Hi nick
You misunderstood the logic behind "resolve the paradox" questions a little bit.
(1) In the stimulus we have facts that create a paradox. The paradox only exists in the context of the facts.
(2) The facts always exists simultaneously

The "resolve the paradox" question stem is: Each of the following, if true, could help to explain the paradox in the context provided, except:
==> Each answer, if true can explain the paradox (why water usage declined) in the context - simultaneous decline in water usage and increase in population in Las Vegas.

The answers themselves indicate the context already. If the answer does NOT attach the context in it, the paradox is meaningless. Thus, the answers do not need to indicate both water usage and population increase. That's redundant. We just need to find a gap between two simultaneous facts.

Hope it's clear.
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Re: Over the last three years, the city of Las Vegas has grown [#permalink]

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29 Aug 2014, 05:06
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Re: Over the last three years, the city of Las Vegas has grown   [#permalink] 29 Aug 2014, 05:06
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