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CR - recent magazine article

by SubratGmat2011 » Sat Sep 25, 2010 3:08 am
According to a recent magazine article, of those office employees who typically work 8 hours at the office each day
but sometimes say that they will work at home on a particular day, 25 percent actually work less than one hour. At
the same time, over 90 percent of those same office employees believe they are more productive working at home
than working in their office. The statements above, if true, best support which of the following conclusions about
the office employees discussed in the article?
"¢ On average, the office employees working at home for a day work fewer hours than office employees working at
the office.
"¢ 10 percent of the office employees are less productive working from home than working in their office.
"¢ At least 15 percent of the office employees do not define productivity exclusively in terms of the number of hours
worked.
"¢ At least 25 percent of the office employees can complete the same amount of work in one hour at home as in 8
hours at the office.
"¢ Some of the office employees make statements regarding their productivity that are not in fact true.
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by paddle_sweep » Sat Sep 25, 2010 4:05 am
I will go with 'E'. Please quote the source and OA.

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by goyalsau » Sat Sep 25, 2010 2:17 pm
I would like to go with A,
what's the OA?
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by SubratGmat2011 » Sat Sep 25, 2010 5:25 pm
OA is C and source is CR 700 to 800 club.
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by goyalsau » Sat Sep 25, 2010 9:46 pm
SubratGmat2011 wrote:According to a recent magazine article, of those office employees who typically work 8 hours at the office each day
but sometimes say that they will work at home on a particular day, 25 percent actually work less than one hour. At
the same time, over 90 percent of those same office employees believe they are more productive working at home
than working in their office. The statements above, if true, best support which of the following conclusions about
the office employees discussed in the article?
"¢ On average, the office employees working at home for a day work fewer hours than office employees working at
the office.
"¢ 10 percent of the office employees are less productive working from home than working in their office.
"¢ At least 15 percent of the office employees do not define productivity exclusively in terms of the number of hours
worked.
"¢ At least 25 percent of the office employees can complete the same amount of work in one hour at home as in 8
hours at the office.
"¢ Some of the office employees make statements regarding their productivity that are not in fact true.
Many Thanks for Posting such a Good question.

Lets assume that office in all has 100 employees.

I Statement - 25 employees who work 8 hours in office each day, Works less than one hour

But 75 employees work for at least 1 hour or more than that but we don't know for How many Hours.


II Statement - 90 employees of the same company work fewer hour in home. Because they think they are more productive so they able to finish the same work in less hours but How many hours less than 8 hours that we don't know.

But 10 employees did not say anything Means productivity is same for them or may be bad.
In this case they to work 8 hours minimum or may be more if work is stress full for them at home.

Company average numbers of works worked in office in office is 8 hours because everybody is working hours
100 employees * 8 hours of each employee = 800 hours
800 hours / 100 = 8 hours.

IF all these employees are working in home
then 25 employees should have worked at most 59 minutes.
And of remaining employees 65 worked at most 7 hours 59 minutes.
only 10 employees left Lets assume they have worked for 24 hours. ( I know this is not possible but still CR they say assume the least possible case )

Calculating in all working of all employees
For 25 employees who work less than 1 hour
25 *59(Minutes) = 1475 minutes. In Total 24.58 Hours.

for 65 employees who work less than 8 hour
65 *479 ( 7 hours = 420 minutes +59 minutes ) = 31135 minutes. In Total 518.91 hours.

Now those employee who are impossible to find
10 employees whose work hours are not given
10 * 24 = 240 hours

Now have to take the average.
24.58 + 518.91 + 240 = 783.49 hours
Total Hours of 100 employees is 783.49 hours

783.49 hours / 100 employees = 7.83 hours

which is lower than 8 hours.


I completely forget that whether i am doing CR or Math. But nothing to say at last. :lol:

Here option A says the same thing.
On average, the office employees working at home for a day work fewer hours than office employees working at
the office.
So answer must be A
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by goyalsau » Mon Sep 27, 2010 12:25 am
SubratGmat2011 wrote:OA is C and source is CR 700 to 800 club.
Can you please provide the explanation how the answer is C.
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by lokesh r » Mon Sep 27, 2010 6:26 am
Question says
25 % employees work for less than an hour @ work impleis 75% employess work for more than an hour.
90 % employees claim more productive at home than at office.


So there must an overlap of about minimum 15 % who work less than an hour @ home and those who claim to be more productive.

IMO D
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by ov25 » Mon Sep 27, 2010 8:58 am
imo C as well
"At least 15 percent of the office employees do not define productivity exclusively in terms of the number of hours
worked"
atleast 90% of 25% = 19.5% say they are productive. The author says they work <1hr/8hr day. Not necessarily that they are not produtive.

Why not
A: compares total # of hours of emps working @ home to those working at office -- no such info
B: 90% claim more prod does not mean 10% claim they are less productive -- no such info
D: Again this compare amout of work completed between the groups -- no such info
E: This purely depends on what the true definition of productivity is. The passage does not claim one.
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by g000fy » Mon Sep 27, 2010 9:09 am
Tricky CR. I got it right only by elimination. My contenders were B and C. :roll:
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by SubratGmat2011 » Mon Sep 27, 2010 8:06 pm
This is what given in the explanation.




The passage presents information about what office employees who work 8-hour
days and who have worked at home told a certain magazine. The first piece of
information is about what some of those office employees actually do: 25 percent
of office employees actually work less than an hour on days that they work at
home. The second piece of information is about what some of those office
employees believe: 90 percent believe that they are more productive working at
home than at the office. A proper GMAT conclusion must be provable by those
two pieces of information.
(A) The passage only provides information about the working hours of 25 percent
of the office employees. The passage does not provide any information regarding
the working hours of the other 75 percent, hence, it is not possible to conclude
anything about the office employees on average. For example, it is possible that
the other 75 percent of the office employees work 14 hour days when working
from home. It is also possible that they work 6 hour days when working from
home.
(B) The passage provides no information about the actual productivity of any of
the office employees. It only provides information about what the office
employees believe about their productivity.
(C) CORRECT. 90 percent of the office employees believe that they are more
productive at home than at work. At the same time, 25 percent of the office
employees actually work fewer hours when they work at home than when they
work at the office. The overlap between these two groups is at least 15 percent of
all of the office employees. This group of employees believes that they are more
productive at home than at work and yet this group actually works fewer hours at
home than at work. Thus, these employees must not define productivity
exclusively in terms of the number of hours worked.
(D) The passage discusses the actual work hours of 25 percent of the office
employees. Then it describes the beliefs of 90 percent of office employees
regarding their productivity. First, there is no necessary link between an
individual's beliefs about his or her productivity and that individual's actual
productivity; hence, no conclusion can be made regarding actual productivity
from the information about beliefs. Second, the number of hours worked alone is
not an indication of productivity; it is possible, for example, that an employee who
works 1 hour is more productive in terms of work done per hour than when he
works 8 hours and yet that employee might still accomplish more total work when
working 8 hours. Therefore, it is not possible to conclude anything regarding
productivity for any of the office employees.
(E) The fact that 90 percent of the office employees believe they are more
productive at home than at work does not necessarily contradict the fact that 25
percent of the office employees work fewer hours at home than at work. It is
possible to work fewer hours and still be more productive.
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by SubratGmat2011 » Mon Sep 27, 2010 8:18 pm
I got a very good explanation from someone as below.



Lets say 100 employees all work from Office.
All 100 say they will work from home on certain days.
25 work less than an hour at home.
>90 believe they are more productive at home.

A : Only 25% said they work 1 hour, so we cannot conclude this.
B : Nowhere does the argument says that any employee said anything about lesser productivity from home.
C : 25 work less at home, all 100 work for 8 hours and 90 say they are more productive at home. We can say that there are 15 people indirectly say that 1 hour at home is as good as 8 hours at work. For this 15%, no of hours worked is not a measure of productivity.
D : This is too far of an inference and is a more extreme choice as C. I would eliminate this choice for mere extremity.
E : We all know this, but the argument doesnt say so... Hehe :P

C is the best.
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