kaplan CR

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kaplan CR

by diebeatsthegmat » Wed Sep 29, 2010 6:42 am
guys, i'll post you some CR from kaplan GMAT book to practice....

According to a recent study, a diet that is free of meat and dairy products greatly reduces the risk of suffering
a heart attact. the study cites the fact that only 10% of those who consume such a diet suffer a heart attack at some point in the lives

which of the following would most seriously weaken the argument above?
A. diets free of meat and dairy are low in calcium, which can lead to bone density decreases
B. those who consume only dairy but not meat are twice as likely to suffer a heart attack as those who consume neither meat nor dairy
C. some people who consume neither dairy nor meat suffer two or more heart attacks over the course of a lifetime.
D. meat and dairy products are high in low density cholesterol, which is known to harden arteries and cause other heart problems.
E. of those who consume dairy and meat, 7% regularly suffer heart attacks over the course of their lifetime.
Source: — Critical Reasoning |

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by shovan85 » Wed Sep 29, 2010 8:50 am
IMO E

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by goyalsau » Wed Sep 29, 2010 9:14 am
IMO E
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by alivapriyada » Wed Sep 29, 2010 9:42 am
one more vote for E

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by ov25 » Wed Sep 29, 2010 12:16 pm
imo C...

I dont know why I feel like a radical... but herez my reasoning any way

M&D Free Diet --> reduces risk of heart attack
or did not reduce risk of heart attacks --> diet contain M&D

so weaken, you have diet contains NO M&D, yet did not reduce risk of heart attacks!

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by shovan85 » Wed Sep 29, 2010 12:38 pm
Say the population is 1000 .
According to E the people will have heart attack = 70
According to passage the people will have heart attack = 100

also if someone says some people went for the diet then lets divide it to 500 (regular diet) and 500 (new diet)
total heart attacks= 35(R)+50(D) = 85 still > 70

even if 100 people go for the diet then also the new diet is flawed 63(R)+10(N) = 73 >70.

So it should be
E

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by ricka343 » Wed Sep 29, 2010 6:57 pm
i will go with C

M&D free diet prevents heart attack
C says Food free in M&D causes heart attack

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by diebeatsthegmat » Wed Sep 29, 2010 10:02 pm
diebeatsthegmat wrote:guys, i'll post you some CR from kaplan GMAT book to practice....

According to a recent study, a diet that is free of meat and dairy products greatly reduces the risk of suffering
a heart attact. the study cites the fact that only 10% of those who consume such a diet suffer a heart attack at some point in the lives

which of the following would most seriously weaken the argument above?
A. diets free of meat and dairy are low in calcium, which can lead to bone density decreases
B. those who consume only dairy but not meat are twice as likely to suffer a heart attack as those who consume neither meat nor dairy
C. some people who consume neither dairy nor meat suffer two or more heart attacks over the course of a lifetime.
D. meat and dairy products are high in low density cholesterol, which is known to harden arteries and cause other heart problems.
E. of those who consume dairy and meat, 7% regularly suffer heart attacks over the course of their lifetime.
very good! the OA is E