Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 29 May 2016, 10:52

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

In May Mrs Lee's earnings were 60 percent of the Lee family'

Author Message
TAGS:

Hide Tags

Senior Manager
Affiliations: SPG
Joined: 15 Nov 2006
Posts: 327
Followers: 13

Kudos [?]: 566 [3] , given: 20

In May Mrs Lee's earnings were 60 percent of the Lee family' [#permalink]

Show Tags

29 May 2010, 08:23
3
KUDOS
11
This post was
BOOKMARKED
00:00

Difficulty:

85% (hard)

Question Stats:

47% (02:12) correct 53% (01:02) wrong based on 449 sessions

HideShow timer Statistics

In May Mrs Lee's earnings were 60 percent of the Lee family's total income. In June Mrs Lee earned 20 percent more than in May. If the rest of the family's income was the same both months, then, in June, Mrs Lee's earnings were approximately what percent of the Lee family's total income ?

(A) 64%
(B) 68%
(C) 72%
(D) 76%
(E) 80%
[Reveal] Spoiler: OA

_________________

press kudos, if you like the explanation, appreciate the effort or encourage people to respond.

Math Expert
Joined: 02 Sep 2009
Posts: 33061
Followers: 5773

Kudos [?]: 70800 [6] , given: 9857

Show Tags

29 May 2010, 08:29
6
KUDOS
Expert's post
6
This post was
BOOKMARKED
In May Mrs Lee's earnings were 60 percent of the Lee family's total income. In June Mrs Lee earned 20 percent more than in May. If the rest of the family's income was the same both months, then, in June, Mrs Lee's earnings were approximately what percent of the Lee family's total income ?

(A) 64%
(B) 68%
(C) 72%
(D) 76%
(E) 80%

Let total income of the family be 100$. In May Mrs Lee's earnings were 60 percent = 60$. Rest of the family's earnings = 40$. In June family's earnings did not change = 40$, Mrs Lee's earnings = 60$*1.2 = 72$. Total = 40 + 72 = 112$. Mrs Lees share = $$\frac{72}{112}\approx{64%}$$. Answer: A. _________________ Senior Manager Status: D-Day is on February 10th. and I am not stressed Affiliations: American Management association, American Association of financial accountants Joined: 12 Apr 2011 Posts: 269 Location: Kuwait Schools: Columbia university Followers: 4 Kudos [?]: 199 [1] , given: 52 Re: In May Mrs Lee's earnings were 60 percent of the Lee family' [#permalink] Show Tags 05 Feb 2012, 11:22 1 This post received KUDOS I hate it when GMAT tricks us with questions. I chose C _________________ Sky is the limit MBA Section Director Affiliations: GMAT Club Joined: 22 Feb 2012 Posts: 2559 Location: India City: Pune GPA: 3.4 WE: Business Development (Manufacturing) Followers: 310 Kudos [?]: 2244 [1] , given: 1774 Re: Simple Percents PS Question [#permalink] Show Tags 14 Oct 2013, 20:29 1 This post received KUDOS Expert's post JmSass217 wrote: Hi all. This question was one I got wrong on a practice test (which unfortunately doesn't give or explain the correct solution). I think I must just be looking at it the wrong way though it doesn't seem like a difficult question at all. Another point of view and explanation would be appreciated. Thanks! In May Mrs. Lee's earnings were 60% of the Lee family's total income. (I wrote down 0.6x) In June Mrs. Lee earned 20% more than in May. ((1.2)(0.6x) maybe this is where I went wrong?) If the rest of the family's income was the same in both months, then what percent of the Lee family's total income did Mrs. Lee earn in June? 64% - 68% - 72% - 76% - 80% My answer was 72% because (1.2(0.6x)) = .72x But I'm guessing now that I wrote it out wrong? The only thing you did wrong is that while calculating Lee's new share you considered the same base i.e. x Lee families income (May) = x Lee's share in that (60%) = 0.6x Lees' income in june = 0.72x Lee families income (June) = 1.12x Lee's new share = 64.28% Or solve it with simple values Lee families income (May) = 100 Lee's share in that (60%) = 60 Lees' income in june = 72 Lee families income (June) = 112 Lee's new share = 64.28% _________________ Senior Manager Affiliations: SPG Joined: 15 Nov 2006 Posts: 327 Followers: 13 Kudos [?]: 566 [0], given: 20 Re: Mrs Lee [#permalink] Show Tags 29 May 2010, 09:15 Bunuel wrote: In May Mrs Lee's earnings were 60 percent of the Lee family's total income. In June Mrs Lee earned 20 percent more than in May. If rest of the family's income did not change, then, in June, Mrs Lee's earnings were approximately what percent of the Lee family's total income ? (A) 64% (B) 68% (C) 72% (D) 76% (E) 80% Let total income of the family be 100$. In May Mrs Lee's earnings were 60 percent = 60$. Rest of the family's earnings = 40$.

In June family's earnings did not change = 40$, Mrs Lee's earnings = 60$*1.2 = 72$. Total = 40 + 72 = 112$. Mrs Lees share = $$\frac{72}{112}\approx{64%}$$.

I think Gmat shouldn't trick us with wording like "total". Quant is already tough and making such questions it just throw me off sometimes.
_________________

press kudos, if you like the explanation, appreciate the effort or encourage people to respond.

Manager
Joined: 04 Sep 2010
Posts: 84
Followers: 1

Kudos [?]: 6 [0], given: 11

Show Tags

04 Jun 2011, 11:38
Though I understand above explanation , considering rest of Family income is fixed it is 64%

What is wrong with this method?
Equation1 ...............ML(May Lee) = 60/100 F (Family);
Equation 2 ................ JL(June Lee) = 120/100 ML
Substitute Equation1 in equation 2
JL = 120/100*(60/100*F)
JL = 72/100*F ... So JL is 72% of Family income
Director
Status: No dream is too large, no dreamer is too small
Joined: 14 Jul 2010
Posts: 650
Followers: 37

Kudos [?]: 624 [0], given: 39

Show Tags

05 Jun 2011, 03:41
1
This post was
BOOKMARKED
prasforgmat wrote:
Though I understand above explanation , considering rest of Family income is fixed it is 64%

What is wrong with this method?
Equation1 ...............ML(May Lee) = 60/100 F (Family);
Equation 2 ................ JL(June Lee) = 120/100 ML
Substitute Equation1 in equation 2
JL = 120/100*(60/100*F)
JL = 72/100*F ... So JL is 72% of Family income

As lee is a family member so his portion is included in the total income.
_________________

Collections:-
PSof OG solved by GC members: http://gmatclub.com/forum/collection-ps-with-solution-from-gmatclub-110005.html
DS of OG solved by GC members: http://gmatclub.com/forum/collection-ds-with-solution-from-gmatclub-110004.html
100 GMAT PREP Quantitative collection http://gmatclub.com/forum/gmat-prep-problem-collections-114358.html
Collections of work/rate problems with solutions http://gmatclub.com/forum/collections-of-work-rate-problem-with-solutions-118919.html
Mixture problems in a file with best solutions: http://gmatclub.com/forum/mixture-problems-with-best-and-easy-solutions-all-together-124644.html

Director
Joined: 01 Feb 2011
Posts: 758
Followers: 14

Kudos [?]: 93 [0], given: 42

Show Tags

11 Jun 2011, 16:35
In May

Lee's income = (60/100)T where T is the family total income in may.

Rest of the family's income = (40/100)T

In June

Lee's income in june = (120/100) (60/100) T = (72/100)T
Rest of the family's income is same as their may's income = (40/100)T

so lee's income as a percentage of total family's income in June = 72/112 = 64%

Manager
Status: MBA Aspirant
Joined: 12 Jun 2010
Posts: 178
Location: India
WE: Information Technology (Investment Banking)
Followers: 3

Kudos [?]: 57 [0], given: 1

Re: In May Mrs Lee's earnings were 60 percent of the Lee family' [#permalink]

Show Tags

05 Feb 2012, 04:10
Ans is A
let total income is x so Mrs Lee income is 0.6x so rest of family income is 0.4x
mow her salary inc by 20% so it now becomes 0.72x but the remaining income remains 0.4x so now the total family income is 1.12x so 0.72x/1.12x
Intern
Joined: 14 Aug 2013
Posts: 2
Followers: 0

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

Show Tags

14 Oct 2013, 17:56
Hi all. This question was one I got wrong on a practice test (which unfortunately doesn't give or explain the correct solution). I think I must just be looking at it the wrong way though it doesn't seem like a difficult question at all. Another point of view and explanation would be appreciated. Thanks!

In May Mrs. Lee's earnings were 60% of the Lee family's total income. (I wrote down 0.6x) In June Mrs. Lee earned 20% more than in May. ((1.2)(0.6x) maybe this is where I went wrong?) If the rest of the family's income was the same in both months, then what percent of the Lee family's total income did Mrs. Lee earn in June?

64% - 68% - 72% - 76% - 80%

My answer was 72% because (1.2(0.6x)) = .72x But I'm guessing now that I wrote it out wrong?
Math Expert
Joined: 02 Sep 2009
Posts: 33061
Followers: 5773

Kudos [?]: 70800 [0], given: 9857

Re: Simple Percents PS Question [#permalink]

Show Tags

14 Oct 2013, 22:42
Expert's post
JmSass217 wrote:
Hi all. This question was one I got wrong on a practice test (which unfortunately doesn't give or explain the correct solution). I think I must just be looking at it the wrong way though it doesn't seem like a difficult question at all. Another point of view and explanation would be appreciated. Thanks!

In May Mrs. Lee's earnings were 60% of the Lee family's total income. (I wrote down 0.6x) In June Mrs. Lee earned 20% more than in May. ((1.2)(0.6x) maybe this is where I went wrong?) If the rest of the family's income was the same in both months, then what percent of the Lee family's total income did Mrs. Lee earn in June?

64% - 68% - 72% - 76% - 80%

My answer was 72% because (1.2(0.6x)) = .72x But I'm guessing now that I wrote it out wrong?

_________________
GMAT Club Legend
Joined: 09 Sep 2013
Posts: 9690
Followers: 466

Kudos [?]: 120 [0], given: 0

Re: In May Mrs Lee's earnings were 60 percent of the Lee family' [#permalink]

Show Tags

15 Nov 2014, 06:25
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
Senior Manager
Joined: 10 Mar 2013
Posts: 290
GMAT 1: 620 Q44 V31
GMAT 2: 690 Q47 V37
GMAT 3: 610 Q47 V28
GMAT 4: 700 Q50 V34
GMAT 5: 700 Q49 V36
GMAT 6: 690 Q48 V35
GMAT 7: 750 Q49 V42
GMAT 8: 730 Q50 V39
Followers: 3

Kudos [?]: 73 [0], given: 2404

Re: In May Mrs Lee's earnings were 60 percent of the Lee family' [#permalink]

Show Tags

01 Jul 2015, 21:56
This question is testing how carefully we can read the problem. Like many of you, I failed to do so and chose C until I carefully reread the problem and saw my error.

Sample numbers are good here.

In May
Family Income = 100
Lee = 60
Rest = 40

In June
Lee = 60*1.2=72
Rest (since it is unchanged) = 40
Family = 112

72/112=approx 64%

A
Re: In May Mrs Lee's earnings were 60 percent of the Lee family'   [#permalink] 01 Jul 2015, 21:56
Similar topics Replies Last post
Similar
Topics:
1 What percent of 60 is 80? 2 10 Jan 2016, 08:23
5 In February Wilson’s earnings were 40 percent of his family’ 7 05 Feb 2013, 12:40
17 In a company 60% of the employees earn less than $50,000 14 01 Sep 2009, 15:26 2 Lee Colle insures its students for thefts up to$1000. The college mak 9 01 Sep 2009, 13:32
2 In May Mrs Lee's earnings were 60 percent of the Lee family's total in 4 17 Dec 2006, 14:29
Display posts from previous: Sort by