GMAT Prep 700+ level CR

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GMAT Prep 700+ level CR

by dhonu121 » Thu Jun 14, 2012 11:33 pm
From 1980 to 1989, total consumption of fish in the country of Jurania increased by 4.5 percent, and total consumption of poultry products there increased by 9.0 percent. During the same period, the population of Jurania increased by 6 percent, in part due to immigration to Jurania from other countries in the region.

If the statements above are true, which of the following must also be true on the basis of them?

A. During the 1980’s in Jurania, profits of wholesale distributors of poultry products increased at a greater rate than did profits of wholesale distributors of fish.
B. For people who immigrated to Jurania during the 1980’s, fish was less likely to be a major part of their diet than was poultry.
C. In 1989 Juranians consumed twice as much poultry as fish.
D. For a significant proportion of Jurania’s population, both fish and poultry products were a regular part of their diet during the 1980’s.
E. Per capita consumption of fish in Jurania was lower in 1989 than in 1980.

OA:E
Does in part in the stimulus mean 50% ?
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Source: — Critical Reasoning |

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by Kasia@EconomistGMAT » Fri Jun 15, 2012 6:18 am
"In part" means to some degree, but not completely [= partly]:
e.g. His reluctance to help could, in part, be explained by his poor eyesight.
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by GMATGuruNY » Fri Jun 15, 2012 7:01 am
dhonu121 wrote:From 1980 to 1989, total consumption of fish in the country of Jurania increased by 4.5 percent, and total consumption of poultry products there increased by 9.0 percent. During the same period, the population of Jurania increased by 6 percent, in part due to immigration to Jurania from other countries in the region.

If the statements above are true, which of the following must also be true on the basis of them?

A. During the 1980’s in Jurania, profits of wholesale distributors of poultry products increased at a greater rate than did profits of wholesale distributors of fish.
B. For people who immigrated to Jurania during the 1980’s, fish was less likely to be a major part of their diet than was poultry.
C. In 1989 Juranians consumed twice as much poultry as fish.
D. For a significant proportion of Jurania’s population, both fish and poultry products were a regular part of their diet during the 1980’s.
E. Per capita consumption of fish in Jurania was lower in 1989 than in 1980.

OA:E
Does in part in the stimulus mean 50% ?
The correct answer choice is WHAT MUST BE TRUE.

Answer choice E: Per capita consumption of fish in Jurania was lower in 1989 than in 1980.
Let f = total fish consumption in 1980 and t = total population in 1980.
Per capita consumption of fish means the average amount of fish consumed by each person.
In 1980, per capita consumption of fish = f/t.
In 1989, the total fish consumption increases by 4.5% and the total population increases by 6%.
Per capita consumption of fish in 1989 = (1.045f)/(1.06t).
(1.045/1.06)(f/t) < f/t.
1989 < 1980.
Thus, answer choice E is WHAT MUST BE TRUE.

The correct answer is E.
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by kullayappayenugula » Fri Jun 15, 2012 11:08 pm
What is wrong with answer choice B?? Why is it wrong?

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by dhonu121 » Fri Jun 15, 2012 11:12 pm
kullayappayenugula wrote:What is wrong with answer choice B?? Why is it wrong?
You don't really know who were majorly responsible for increased fish consumption in the increased population. May be that original people of Jurania increased their intake of fish.
Hence this might not be true.
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by Bill@VeritasPrep » Sat Jun 16, 2012 2:04 pm
kullayappayenugula wrote:What is wrong with answer choice B?? Why is it wrong?
It is a possible explanation, but when we're looking for a conclusion, we're looking for the one answer that is guaranteed to be true.
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by Gaurav 2013-fall » Sun Jun 17, 2012 7:05 am
good question!

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by rashedhbs » Mon Nov 19, 2018 5:20 am
Bill@VeritasPrep wrote:
kullayappayenugula wrote:What is wrong with answer choice B?? Why is it wrong?
It is a possible explanation, but when we're looking for a conclusion, we're looking for the one answer that is guaranteed to be true.
I still don't understand why (B) is wrong? Please help.