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Beginning in 1997, high school seniors in State Q have been required

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Re: Beginning in 1997, high school seniors in State Q have been required  [#permalink]

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New post 26 Sep 2017, 05:53
Dear souvik101990, GMATNinja, Other experts,

It took me about 4 minutes to answer this question correctly. My concern is that if a similar question,which involves calculation in every answer choice, comes in the real test should I go for it or make a guess and move on.
Thanks in advance.
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Re: Beginning in 1997, high school seniors in State Q have been required  [#permalink]

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New post 26 Sep 2017, 09:08
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CaptainJackSparr0w wrote:
Dear souvik101990, GMATNinja, Other experts,

It took me about 4 minutes to answer this question correctly. My concern is that if a similar question,which involves calculation in every answer choice, comes in the real test should I go for it or make a guess and move on.
Thanks in advance.

Don't worry, you will NEVER see a question quite like this on the actual GMAT. I still can't quite figure out if this is trying to be quant, CR, or IR; an actual CR question will never require actual calculation. And as DmitryFarber mentioned above, there are other problems with the question: https://gmatclub.com/forum/beginning-in ... l#p1651655.

Sure, if you get totally stuck on something on your actual test, you'll need to move on. But please don't worry about this particular question, Captain!
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Re: Beginning in 1997, high school seniors in State Q have been required  [#permalink]

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New post 06 Jun 2018, 06:49
anyone who don't understand B, it's very easy to understand why not B

lets suppose in 97 there are 0.8x who passed,0.2x who didn't . and in 98 there are 0.72 who passed and y who didn't.
so to satisfy A or B, 0.72x / (0.72x+y) < 0.8 => y> 0.18x in this case, y could be 0.19x that makes the total number < x . or y could be 0.5x , that makes the total senior student number > x ,which is the amount of 97.
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Re: Beginning in 1997, high school seniors in State Q have been required  [#permalink]

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New post 01 Mar 2019, 09:24
Can't understand the conclusion and the answer explanations.
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Re: Beginning in 1997, high school seniors in State Q have been required  [#permalink]

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New post 14 Aug 2019, 05:36
So to make student graduate high school student need to pass an exam
1997 some 20% student failed
In 1998 the result was more bad 10 % “LESS” student pass in comparison to last year ..
So lets assume in 1997 100 high school student were there
1997 ) 80 , 20
1998 ) 72 , X
A ) If this has to be true then there has to be drop in high school student as any thing more then 88 student we cant reach higher %age so thus we can say A is not the least
B ) for this to be true we need passing % to be 79 or less then 79 = so student minimum required is 91 or more .. which makes B as can be or can be not .. defiantly LEAST possible
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Re: Beginning in 1997, high school seniors in State Q have been required  [#permalink]

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New post 14 Sep 2019, 22:04
Let's start with POE-
A. If the percentage of high school seniors who passed the exam increased from 1997 to 1998 , the number of high schools seniors decreased during that time period
This is always true. For example, even if pass %age increases from 80 to 81, the total number of students will decrease.
B. If the percentage of high school seniors who passed the exam decreased from 1997 to 1998 , the number of high schools seniors increased during that time period.
This may or may not be true. By putting values there can be case when it can and cannot be valid. So, can hold on the option.
C. Unless the number of high school seniors was lower in 1998 than in 1997, the number of seniors who passed the exam in 1998 was lower than 80 percent.
This may or may not be true. By putting values there can be case when it can and cannot be valid. So, can hold on the option.
D. If the number of high school seniors who did not pass the exam decreased by more than 10 percent from 1997 to 1998, the percentage of high school seniors who passed the exam in 1998 was greater than 80 percent.
This is definitely true. I think easiest option to eliminate.
E. If the percentage of high school seniors who passed the exam in 1998 was less than 70 percent, the number of high school seniors in 1997 was higher than the number in 1998.
This is always false. If the percentage is even 69.99, still the number of 1997 will not be higher than 1998. Hence this option is correct.
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Re: Beginning in 1997, high school seniors in State Q have been required   [#permalink] 14 Sep 2019, 22:04

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