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

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The number of North American children who are obese that is, [#permalink] New post 27 Jan 2006, 00:43
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A
B
C
D
E

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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 major 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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 [#permalink] New post 27 Jan 2006, 01:51
I think C.
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 [#permalink] New post 27 Jan 2006, 02:46
dahiya, u r right on this one. OA is C- dahiya can you please post your expln. I dont have one.
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 [#permalink] New post 27 Jan 2006, 11:34
shahnandan wrote:
dahiya, u r right on this one. OA is C- dahiya can you please post your expln. I dont have one.


Say there are total of 1000 children.

Out of those some are overweight and some are not. But those who are overweight have weight more than that of 85%. Means 15 % are overwight and 85 % are not overweight.

So Last year OW - 150, Not OW = 850

If number of OW has increased then to make the % still same (i.e 85 %) we have to incresae both OW and not OW.
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 [#permalink] New post 27 Jan 2006, 21:05
thanks dahiya for the great expln.
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 [#permalink] New post 27 Jan 2006, 21:19
I got (C) using different logic. A was the trap answer because of it`s extreme language.

The stem says that the number of children that are obese is steadily increasing. That means 15% of say 50 million kids in 1990, would equal 15% of 60 million kids in 2005. Of course, as the population continues to grow, the proportionate numbers of kids must growing as well.

Therefore, the numbers of non-obese kids must be growing as well.

**This however is not the case in Japan, where the population (especially kids) is actally decreasing. Therefore, my logic may not be suitable for all societies.
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 [#permalink] New post 27 Jan 2006, 21:32
GMATT73 wrote:
That means 15% of say 50 million kids in 1990, would equal 15% of 60 million kids in 2005.


Agree that the C is best, but i couldnot follow your japanese logic. need more light.
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 [#permalink] New post 28 Jan 2006, 16:42
C for me..
  [#permalink] 28 Jan 2006, 16:42
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