Was Lisa's salary at least twice as much as Julie's annual : GMAT Data Sufficiency (DS)
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# Was Lisa's salary at least twice as much as Julie's annual

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Was Lisa's salary at least twice as much as Julie's annual [#permalink]

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05 Jul 2008, 10:30
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Was Lisa's salary at least twice as much as Julie's annual salary?

(1) Lisa's annual salary was $20,000 more than Julies annual salary (2) Lisa's anual salary was less than$40,000
[Reveal] Spoiler: OA

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Last edited by Bunuel on 28 Jan 2012, 05:11, edited 1 time in total.
Added the OA
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Re: Was Lisa's salary [#permalink]

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05 Jul 2008, 19:49
I get A. We have to find out if l >=2j , where l is lisas salary, and j is julie's salary.

from stat 1, l=j+20,000, in other words, is j+20,000 >=2j --> we get that 20,000 >=j. So, witht this known, no matter what number you pick for j, if you add 20,000 to it to get lisa's salary, you will see that its always at least twice as large.

from stat 2, you only know lisas salary and nothing about julies. insuff
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Re: Was Lisa's salary [#permalink]

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05 Jul 2008, 23:07
TheBigCheese wrote:
Was Lisa's salary at least twice as much as Julie's annual salary?
1) lisa's annual salary was $20,000 more than Julies annual salary 2) lisa's anual salary was less than$40,000

I think it's C:
L>=J is not an assumption, it's a question though.
1: L= J+20 (nothing could be drawn from here)
2: L<40 (nothing too)

L=J+20 and L<40 so J<20
J<20 and L= J+20 so 2J<L
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Re: Was Lisa's salary [#permalink]

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04 Jun 2009, 01:36
TheBigCheese wrote:
DavidArchuleta wrote:
TheBigCheese wrote:
Was Lisa's salary at least twice as much as Julie's annual salary?
1) lisa's annual salary was $20,000 more than Julies annual salary 2) lisa's anual salary was less than$40,000

I think it's C:
L>=J is not an assumption, it's a question though.
1: L= J+20 (nothing could be drawn from here)
2: L<40 (nothing too)

L=J+20 and L<40 so J<20
J<20 and L= J+20 so 2J<L

OA is C

Guys, 2J<40, L also <40, how do you know 2J<L?
I think the OA wrong!
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Re: At least twice as much as anual salary [#permalink]

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04 Jun 2009, 03:20
Question: L >= 2J
(1). L = J + 20
J + 20 >= 2J
J > 20
But not sure about Lisa. Insufficient

(2) L < 40
From this statement alone we cannot identify what is J's salary. So insufficient

Combining (1) and (2)

L = J + 20; L < 40 and J > 20,
Comining this we can identify the solution; IMO C
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Re: Was Lisa's salary at least twice as much as Julie's annual [#permalink]

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28 Jan 2012, 02:04
I am confused with this DS. Need clear help.
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Re: Was Lisa's salary at least twice as much as Julie's annual [#permalink]

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28 Jan 2012, 05:10
Baten80 wrote:
I am confused with this DS. Need clear help.

Was Lisa's salary at least twice as much as Julie's annual salary?

Question: is $$L\geq{2J}$$?

(1) Lisa's annual salary was $20,000 more than Julies annual salary --> $$J=L-20$$ --> question becomes: is $$L\geq{2(L-20)}$$? --> is $$L\leq{40}$$? We don't know that. Not sufficient. Example: L=50 and J=30 --> answer NO; L=40 and J=20 --> answer YES. (2) Lisa's anual salary was less than$40,000 --> $$L<40$$, clearly insufficient as no info about J.

(1)+(2) From (1) question boiled down to: "is $$L\leq{40}$$" and (2) says that $$L<40$$, so the asnwer is YES. Sufficient.

Answer: C.
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Re: Was Lisa's salary at least twice as much as Julie's annual   [#permalink] 28 Jan 2012, 05:10
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# Was Lisa's salary at least twice as much as Julie's annual

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