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11 Nov 2012, 02:38
3
00:00

Difficulty:

55% (hard)

Question Stats:

65% (02:14) correct 35% (02:08) wrong based on 196 sessions

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Rebecca's annual income is $15,000 and Jimmy's annual income is$18,000. By how much must Rebecca's annual income increase so that it constitutes 55% of Rebecca and Jimmy's combined income?

(A) $3,000 (B)$4,000
(C) $7,000 (D)$11,000
(E) $25,000 _________________ I will rather do nothing than be busy doing nothing - Zen saying Manager Joined: 02 Nov 2012 Posts: 93 Location: India Concentration: Entrepreneurship, Strategy WE: Other (Computer Software) Re: Rebecca's annual income is$15,000  [#permalink]

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11 Nov 2012, 02:58
3
Pansi wrote:
Rebecca's annual income is $15,000 and Jimmy's annual income is$18,000. By how much must Rebecca's annual income increase so that it constitutes 55% of Rebecca and Jimmy's combined income?
(A) $3,000 (B)$4,000
(C) $7,000 (D)$11,000
(E) $25,000 $$\frac{(15000+x)}{(15000+x+18000)}=0.55$$ Solve for x. You get $$x=7000$$ _________________ TH Give me +1 Kudos if my post helped! "Follow your passion. Change the world." Intern Joined: 18 May 2012 Posts: 14 Re: Rebecca's annual income is$15,000  [#permalink]

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15 Nov 2012, 16:15
th03 wrote:
Pansi wrote:
Rebecca's annual income is $15,000 and Jimmy's annual income is$18,000. By how much must Rebecca's annual income increase so that it constitutes 55% of Rebecca and Jimmy's combined income?
(A) $3,000 (B)$4,000
(C) $7,000 (D)$11,000
(E) $25,000 $$\frac{(15000+x)}{(15000+x+18000)}=0.55$$ Solve for x. You get $$x=7000$$ Why is that that Rebeca + jimmy's combined income is 15000 + X + 18000, shouldnt it be just 15k = 18k? Manager Joined: 02 Nov 2012 Posts: 93 Location: India Concentration: Entrepreneurship, Strategy WE: Other (Computer Software) Re: Rebecca's annual income is$15,000  [#permalink]

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16 Nov 2012, 00:09
2
chibimoon wrote:
th03 wrote:
Pansi wrote:
Rebecca's annual income is $15,000 and Jimmy's annual income is$18,000. By how much must Rebecca's annual income increase so that it constitutes 55% of Rebecca and Jimmy's combined income?
(A) $3,000 (B)$4,000
(C) $7,000 (D)$11,000
(E) $25,000 $$\frac{(15000+x)}{(15000+x+18000)}=0.55$$ Solve for x. You get $$x=7000$$ Why is that that Rebeca + jimmy's combined income is 15000 + X + 18000, shouldnt it be just 15k = 18k? Rebecca's existing income is$15,000. Let Rebecca's new income be $(15,000+x). This new income of$(15,000+x) constitues 55% of Rebecca and Jimmy's combined income.

Therefore Rebecca + Jimmy's income = Rebecca's new income + Jimmy's income = $(15,000+x) +$18,000

$$=> \frac{Rebecca'sNewIncome}{(Rebecca'sNewIncome + Jimmy'sIncome)}=55%$$

When Rebecca's income increases by x dollars, Rebecca and Jimmy's combined income also increases by x dollars. Does this make sense?
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16 Nov 2012, 18:32
Pansi wrote:
Rebecca's annual income is $15,000 and Jimmy's annual income is$18,000. By how much must Rebecca's annual income increase so that it constitutes 55% of Rebecca and Jimmy's combined income?

(A) $3,000 (B)$4,000
(C) $7,000 (D)$11,000
(E) $25,000 In my opinion, the question is a bit misleading. The answer assumes the reader is combining Rebecca's new income with Jimmy's current income. The way I read the question is Rebecca's current income + Jimmy's current income (which leads to an answer of$3,150).

Where is this from? From my perspective, this doesn't seem like a good question as there is ambiguity, although I may be missing something obvious.
Intern
Joined: 18 May 2012
Posts: 14
Re: Rebecca's annual income is $15,000 and Jimmy's annual income [#permalink] ### Show Tags 16 Nov 2012, 23:25 egiles wrote: Pansi wrote: Rebecca's annual income is$15,000 and Jimmy's annual income is $18,000. By how much must Rebecca's annual income increase so that it constitutes 55% of Rebecca and Jimmy's combined income? (A)$3,000
(B) $4,000 (C)$7,000
(D) $11,000 (E)$25,000

In my opinion, the question is a bit misleading. The answer assumes the reader is combining Rebecca's new income with Jimmy's current income. The way I read the question is Rebecca's current income + Jimmy's current income (which leads to an answer of $3,150). Where is this from? From my perspective, this doesn't seem like a good question as there is ambiguity, although I may be missing something obvious. Yes, i agree, any tips on avoiding this mistake in the future please? Veritas Prep GMAT Instructor Joined: 16 Oct 2010 Posts: 9149 Location: Pune, India Re: Rebecca's annual income is$15,000 and Jimmy's annual income  [#permalink]

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19 Oct 2015, 22:56
1
egiles wrote:
Pansi wrote:
Rebecca's annual income is $15,000 and Jimmy's annual income is$18,000. By how much must Rebecca's annual income increase so that it constitutes 55% of Rebecca and Jimmy's combined income?

(A) $3,000 (B)$4,000
(C) $7,000 (D)$11,000
(E) $25,000 In my opinion, the question is a bit misleading. The answer assumes the reader is combining Rebecca's new income with Jimmy's current income. The way I read the question is Rebecca's current income + Jimmy's current income (which leads to an answer of$3,150).

Where is this from? From my perspective, this doesn't seem like a good question as there is ambiguity, although I may be missing something obvious.

Actually, there is no ambiguity in this question. It is extremely logical that the total salary will consist of Rebecca's new salary.

If Rebecca's new salary has to constitute 55% of their combined income, then obviously, their combined income includes her "new salary" only - there are no two ways about it.
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Intern
Joined: 05 Jan 2015
Posts: 1

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21 Oct 2015, 03:09
1
Let the increase in Rebecca's salary be $x Rebecca's new income =$15000 + x

15000 + x = (55/100)* (15000 + x + 18000)
15000 + x = 0.55x + 18150
0.45x = 3150
x = $7000 Option C Intern Joined: 11 Sep 2016 Posts: 3 Re: Rebecca's annual income is$15,000 and Jimmy's annual income  [#permalink]

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01 Dec 2016, 00:15
Quick way to go through options. In order to be 55% of combined salary share of Rebecca, it shoul be higher than salary of Jimmy which is 18,000.
so i picked b and c in which I got C as correct ans
Intern
Joined: 11 Jan 2016
Posts: 30
Re: Rebecca's annual income is $15,000 and Jimmy's annual income [#permalink] ### Show Tags 02 Dec 2016, 05:34 egiles wrote: Pansi wrote: Rebecca's annual income is$15,000 and Jimmy's annual income is $18,000. By how much must Rebecca's annual income increase so that it constitutes 55% of Rebecca and Jimmy's combined income? (A)$3,000
(B) $4,000 (C)$7,000
(D) $11,000 (E)$25,000

In my opinion, the question is a bit misleading. The answer assumes the reader is combining Rebecca's new income with Jimmy's current income. The way I read the question is Rebecca's current income + Jimmy's current income (which leads to an answer of $3,150). Where is this from? From my perspective, this doesn't seem like a good question as there is ambiguity, although I may be missing something obvious. Agreed. I made the same mistake. Manager Joined: 14 Jun 2016 Posts: 65 Location: India GMAT 1: 610 Q49 V21 WE: Engineering (Manufacturing) Re: Rebecca's annual income is$15,000 and Jimmy's annual income  [#permalink]

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31 Jul 2017, 06:51
Nitu27 wrote:
Quick way to go through options. In order to be 55% of combined salary share of Rebecca, it shoul be higher than salary of Jimmy which is 18,000.
so i picked b and c in which I got C as correct ans

Better to solve the question directly as no such complexity is involved.
Only we need to read the question thoroughly
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