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in some months last year, natalie, a sales representative at

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in some months last year, natalie, a sales representative at  [#permalink]

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New post 01 Dec 2008, 15:27
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A
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Question Stats:

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in some months last year, natalie, a sales representative at
SmithKline & Beecham, went over $60000 in sales. in how
many months last year did she do so?

1. last year, the number of months in which natalie went
over $60000 was 8 months more than the number of
months in which she did not.

2. last year, the number of months in which natalie went
below $60000 was 1/5 the number of months in which
she did not.

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Re: DS: tough one  [#permalink]

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New post 01 Dec 2008, 19:49
IMO D

1)o = 8+u also o+u = 12 so o=10;u=2

2) u = 1/5(O) ; so o=10;u=2

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Re: DS: tough one  [#permalink]

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New post 01 Dec 2008, 22:04
try again... usually if I say its tough..there is a trap somewhere..
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Re: DS: tough one  [#permalink]

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New post 01 Dec 2008, 22:26
fresinha12 wrote:
in some months last year, natalie, a sales representative at SmithKline & Beecham, went over $60000 in sales. in how many months last year did she do so?

1. last year, the number of months in which natalie went over $60000 was 8 months more than the number of months in which she did not.

2. last year, the number of months in which natalie went below $60000 was 1/5 the number of months in which she did not.


The possibilities are:

Sales above (over) $60000 = a
Sales equal to $60000 = e
Sales below to $60000 = b

1: a - b -e = 8

if a = 9, b = 1 and e = 2
if a = 10, b = 2 and e = 0

so nsf..

2: b = 1/5 (a+e)
5b = (a+e)
so "b" has to be 2 and (a+e) = 10 but do not know what "a" and "e" are. nsf.

1&2: since "a" cannot be 9 cuz if so "e" has to be 2 and (a+e) becomes 11 which is wrong (from st... 2).
so a has to be 10 and e equal to 0 to have a+e = 10.

C: Really tricky. :-D
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Re: DS: tough one  [#permalink]

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New post 02 Dec 2008, 00:52
Hi, Tiger!

fresinha12 wrote:
1. last year, the number of months in which natalie went
over $60000 was 8 months more than the number of
months in which she did not
.


the bold part means <=$60000 (not <$60000). So, first statement is sufficient.
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Re: DS: tough one  [#permalink]

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New post 02 Dec 2008, 03:30
A.

(1) is suff since (>60) -8 = (<=60)
>60 + <=60 =12

(2) insuff <60 = 1/5 (>=60) but we need >60.

sorry for the messy symbols... :)
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Re: DS: tough one  [#permalink]

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New post 02 Dec 2008, 07:56
Agree walker. I also meant to say the same as you said but forgot to put -e, which I added.

But still I did not get "how A is suff"?



walker wrote:
Hi, Tiger!

fresinha12 wrote:
1. last year, the number of months in which natalie went
over $60000 was 8 months more than the number of
months in which she did not
.


the bold part means <=$60000 (not <$60000). So, first statement is sufficient.

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Gmat: http://gmatclub.com/forum/everything-you-need-to-prepare-for-the-gmat-revised-77983.html


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Re: DS: tough one  [#permalink]

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New post 02 Dec 2008, 12:29
The equation for statement 1 is following:

x + (x-8)=12 ---> x=10 (10 and 2 months respectively)
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Re: DS: tough one  [#permalink]

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New post 02 Dec 2008, 23:23
Thanks walker.

Though the question was not very difficult, statement 1 skipped off from my head.
:oops:
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Re: DS: tough one  [#permalink]

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New post 03 Dec 2008, 08:13
OA is A..

its not tough, yet so many of you got it wrong...
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Re: DS: tough one  [#permalink]

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New post 05 Dec 2008, 00:30
no wonder I didn't do well on the GMAT Quant. I didn't know GMAT was this tricky. I didn't consider the equal to $60,000 part. A makes sense in that regards.

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Re: DS: tough one &nbs [#permalink] 05 Dec 2008, 00:30
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in some months last year, natalie, a sales representative at

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