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# The number of North American children who are obese-that is,

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Director
Joined: 29 Jul 2006
Posts: 856
The number of North American children who are obese-that is, [#permalink]

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02 Jun 2007, 00:14
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The number of North American children who are obese-that is, who have more body fat than do 85 percent of North American children their age---is steadily increasing, according to four major studies conducted over the past 15 years.

If the finding reported above is correct, it can be properly concluded that

(A) when four majors studies all produce similar results, those studies must be accurate

(B) North American children have been progressively less physically active over the past 15 years

(C) the number of North American children who are not obese increased over the past 15 years

(D) over the past 15 years, the number of North American children who are underweight has declined

(E) the incidence of obesity in North American children tends to increase as the children grow older

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Joined: 08 Nov 2006
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02 Jun 2007, 10:53
vineetgupta wrote:
The number of North American children who are obese-that is, who have more body fat than do 85 percent of North American children their age---is steadily increasing, according to four major studies conducted over the past 15 years.

If the finding reported above is correct, it can be properly concluded that

(A) when four majors studies all produce similar results, those studies must be accurate

(B) North American children have been progressively less physically active over the past 15 years

(C) the number of North American children who are not obese increased over the past 15 years

(D) over the past 15 years, the number of North American children who are underweight has declined

(E) the incidence of obesity in North American children tends to increase as the children grow older

Per definition of obese in the argument,

Number of obese = 0.15 * Population

So, if 0.15*P increases, then 0.85*P (the number of non-obese children) must also increase.

Thus C is correct.
Senior Manager
Joined: 04 Nov 2006
Posts: 259
Location: California

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02 Jun 2007, 14:19
C...
Director
Joined: 29 Jul 2006
Posts: 856

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03 Jun 2007, 03:14
vineetgupta wrote:
The number of North American children who are obese-that is, who have more body fat than do 85 percent of North American children their age---is steadily increasing, according to four major studies conducted over the past 15 years.

If the finding reported above is correct, it can be properly concluded that

(A) when four majors studies all produce similar results, those studies must be accurate

(B) North American children have been progressively less physically active over the past 15 years

(C) the number of North American children who are not obese increased over the past 15 years

(D) over the past 15 years, the number of North American children who are underweight has declined

(E) the incidence of obesity in North American children tends to increase as the children grow older

Per definition of obese in the argument,

Number of obese = 0.15 * Population

So, if 0.15*P increases, then 0.85*P (the number of non-obese children) must also increase.

Thus C is correct.

The OA is C.
whats wrong with D??
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Re: The number of North American children who are obese-that is, [#permalink]

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07 Jun 2016, 23:46
vineetgupta wrote:
The number of North American children who are obese-that is, who have more body fat than do 85 percent of North American children their age---is steadily increasing, according to four major studies conducted over the past 15 years.

If the finding reported above is correct, it can be properly concluded that

(A) when four majors studies all produce similar results, those studies must be accurate

(B) North American children have been progressively less physically active over the past 15 years

(C) the number of North American children who are not obese increased over the past 15 years

(D) over the past 15 years, the number of North American children who are underweight has declined

(E) the incidence of obesity in North American children tends to increase as the children grow older

From the argument :

Definition of obesity : bf> 85% of NA kids. So 85% people always need to have bodyfat less than whatever is the current obesity level.

85% = no. of non obese/ (no. of obese + no. of non obese)

So if no. of obese is increasing, to keep the 85% constant. no. of non obese has to increase as well. Else there will be a drop in 85%.

Clearly C
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Re: The number of North American children who are obese-that is,   [#permalink] 07 Jun 2016, 23:46
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