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# Lois has x dollars more than Jim has, and together they have

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Lois has x dollars more than Jim has, and together they have [#permalink]  20 Dec 2012, 07:04
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Lois has x dollars more than Jim has, and together they have a total of y dollars. Which of the following represents the number of dollars that Jim has?

(A) (y - x)/2
(B) y - x/2
(C) y/2 - x
(D) 2y - x
(E) y - 2x
[Reveal] Spoiler: OA
Math Expert
Joined: 02 Sep 2009
Posts: 28784
Followers: 4606

Kudos [?]: 47695 [0], given: 7130

Re: Lois has x dollars more than Jim has, and together they have [#permalink]  20 Dec 2012, 07:09
Expert's post
Lois has x dollars more than Jim has, and together they have a total of y dollars. Which of the following represents the number of dollars that Jim has?

(A) (y - x)/2
(B) y - x/2
(C) y/2 - x
(D) 2y - x
(E) y - 2x

Let J be the number of dollars that Jim has. Then Lois has J+x dollars.

Since together they have a total of y dollars, then J+(J+x)=y --> J=(y-x)/2.

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Joined: 12 Jan 2013
Posts: 249
Followers: 3

Kudos [?]: 39 [0], given: 47

Re: Lois has x dollars more than Jim has, and together they have [#permalink]  10 Jan 2014, 02:01
Lois has x dollars more than Jim has, and together they have a total of y dollars. Which of the following represents the number of dollars that Jim has?

(A) (y - x)/2
(B) y - x/2
(C) y/2 - x
(D) 2y - x
(E) y - 2x

1) Set up the equations: [L = J + x], [L + J = y]

2) Substitute L for J + x and insert this in the second equation, solve so you only have J separately on one side ----> J = (y - x)/2
Senior Manager
Joined: 25 Sep 2012
Posts: 278
Location: India
Concentration: Strategy, Marketing
Schools: Ivey '17
GMAT 1: 660 Q49 V31
GMAT 2: 680 Q48 V34
Followers: 0

Kudos [?]: 88 [1] , given: 237

Re: Lois has x dollars more than Jim has, and together they have [#permalink]  30 May 2014, 05:07
1
KUDOS
Lois has x dollars more than Jim has, and together they have a total of y dollars. Which of the following represents the number of dollars that Jim has?

(A) (y - x)/2
(B) y - x/2
(C) y/2 - x
(D) 2y - x
(E) y - 2x

In the exam the answer would be presented as above or as below, the way it is after formatting with math symbols?

(A) $$\frac{y-x}{2}$$
(B) $$y -\frac{x}{2}$$
Math Expert
Joined: 02 Sep 2009
Posts: 28784
Followers: 4606

Kudos [?]: 47695 [1] , given: 7130

Re: Lois has x dollars more than Jim has, and together they have [#permalink]  30 May 2014, 06:16
1
KUDOS
Expert's post
b2bt wrote:
Lois has x dollars more than Jim has, and together they have a total of y dollars. Which of the following represents the number of dollars that Jim has?

(A) (y - x)/2
(B) y - x/2
(C) y/2 - x
(D) 2y - x
(E) y - 2x

In the exam the answer would be presented as above or as below, the way it is after formatting with math symbols?

(A) $$\frac{y-x}{2}$$
(B) $$y -\frac{x}{2}$$

_________
The way you put it.
_________________
Re: Lois has x dollars more than Jim has, and together they have   [#permalink] 30 May 2014, 06:16
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