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

 It is currently 22 May 2015, 19:20

### 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

# Is the cost of an Organ more than the cost of a Flute ?

Author Message
TAGS:
Manager
Joined: 25 Jan 2010
Posts: 108
Location: Calicut, India
Followers: 6

Kudos [?]: 100 [2] , given: 40

Is the cost of an Organ more than the cost of a Flute ? [#permalink]  23 Nov 2011, 15:00
2
KUDOS
2
This post was
BOOKMARKED
00:00

Difficulty:

75% (hard)

Question Stats:

47% (02:38) correct 53% (01:33) wrong based on 43 sessions
Is the cost of an Organ more than the cost of a Flute ?

(1) Three times the cost of an organ is $15 more than twice the cost of a Flute. (2) Five times the cost of an organ is$12 more than six time the cost of a Flute.
[Reveal] Spoiler: OA

_________________

If u think this post is useful plz feed me with a kudo

Last edited by Bunuel on 27 Jan 2014, 05:28, edited 1 time in total.
Renamed the topic and edited the question.
Retired Moderator
Status: 2000 posts! I don't know whether I should feel great or sad about it! LOL
Joined: 04 Oct 2009
Posts: 1722
Location: Peru
Schools: Harvard, Stanford, Wharton, MIT & HKS (Government)
WE 1: Economic research
WE 2: Banking
WE 3: Government: Foreign Trade and SMEs
Followers: 76

Kudos [?]: 445 [1] , given: 109

Re: DS#1 [#permalink]  23 Nov 2011, 16:22
1
KUDOS
Let me try:
X: Cost of the organ
Y: Cost of the flute

1) $$3X - 2Y = 15$$
Two variables, one equation, not enough.

2) $$5X - 6Y = 12$$
It seems the same as in 1)
But, let's divide the equation by 6.

$$\frac{5X}{6} - Y = 2$$

So, if we had $$x - y$$, the result would be greater than 2.

What do you think?
_________________

"Life’s battle doesn’t always go to stronger or faster men; but sooner or later the man who wins is the one who thinks he can."

My Integrated Reasoning Logbook / Diary: my-ir-logbook-diary-133264.html

GMAT Club Premium Membership - big benefits and savings

Manager
Joined: 25 Jan 2010
Posts: 108
Location: Calicut, India
Followers: 6

Kudos [?]: 100 [0], given: 40

Re: DS#1 [#permalink]  23 Nov 2011, 20:02
metallicafan wrote:
Let me try:
X: Cost of the organ
Y: Cost of the flute

1) $$3X - 2Y = 15$$
Two variables, one equation, not enough.

2) $$5X - 6Y = 12$$
It seems the same as in 1)
But, let's divide the equation by 6.

$$\frac{5X}{6} - Y = 2$$

So, if we had $$x - y$$, the result would be greater than 2.

What do you think?

Thanks.
Wasn't 100% clear before, since 2nd equation too got 2 variables. I took both the equations to solve and ended up in the trap answer C.
Here the logic is 5/6 is less than 1 and still X possess a greater value as the answer is 2. Right?

Thanks metallicafan
_________________

If u think this post is useful plz feed me with a kudo

Retired Moderator
Status: 2000 posts! I don't know whether I should feel great or sad about it! LOL
Joined: 04 Oct 2009
Posts: 1722
Location: Peru
Schools: Harvard, Stanford, Wharton, MIT & HKS (Government)
WE 1: Economic research
WE 2: Banking
WE 3: Government: Foreign Trade and SMEs
Followers: 76

Kudos [?]: 445 [1] , given: 109

Re: DS#1 [#permalink]  24 Nov 2011, 05:54
1
KUDOS
cleetus wrote:
metallicafan wrote:
Let me try:
X: Cost of the organ
Y: Cost of the flute

1) $$3X - 2Y = 15$$
Two variables, one equation, not enough.

2) $$5X - 6Y = 12$$
It seems the same as in 1)
But, let's divide the equation by 6.

$$\frac{5X}{6} - Y = 2$$

So, if we had $$x - y$$, the result would be greater than 2.

What do you think?

Thanks.
Wasn't 100% clear before, since 2nd equation too got 2 variables. I took both the equations to solve and ended up in the trap answer C.
Here the logic is 5/6 is less than 1 and still X possess a greater value as the answer is 2. Right?

Thanks metallicafan

Right. Maybe it is not the most elegant solution, but it is what I would do.
I am sure that there is a better way to solve it.
_________________

"Life’s battle doesn’t always go to stronger or faster men; but sooner or later the man who wins is the one who thinks he can."

My Integrated Reasoning Logbook / Diary: my-ir-logbook-diary-133264.html

GMAT Club Premium Membership - big benefits and savings

Manager
Joined: 31 May 2011
Posts: 89
Location: India
GMAT Date: 12-07-2011
GPA: 3.22
WE: Information Technology (Computer Software)
Followers: 1

Kudos [?]: 35 [1] , given: 4

Re: DS#1 [#permalink]  24 Nov 2011, 06:22
1
KUDOS
cleetus wrote:
Is the cost of an Organ more than the cost of a Flute ?

A) Three times the cost of an organ is $15 more than twice the cost of a Flute. B) Five times the cost of an organ is$12 more than six time the cost of a Flute.

IMO its B. This is how i solved it...

S1: 3M = 15+2F
=> M = 5+0.66F.. In this equation as we are getting the decreased value in terms of 0.66F. So insufficient.
For example F can be 100 so M = 71 or if F = 12, M becomes 23.

S2: 5M = 12+6F
=> M = 2.4+1.2F. Here for whatever may be the value of the flute is Organ price is always greater as 1.2F will always be greater than F. Sufficient.
Manager
Joined: 25 Jan 2010
Posts: 108
Location: Calicut, India
Followers: 6

Kudos [?]: 100 [0], given: 40

Re: DS#1 [#permalink]  24 Nov 2011, 08:02
Thanks for more clarity +1
_________________

If u think this post is useful plz feed me with a kudo

Intern
Joined: 26 Jul 2011
Posts: 27
Followers: 0

Kudos [?]: 5 [1] , given: 3

Re: DS#1 [#permalink]  24 Nov 2011, 08:58
1
KUDOS
Can't this be solved just by logic,

For 3x-2y = 12 or to have a +ve value, x can be less than y or x can be greater than y...so not sufficient.

For 5x-6y=15 or = to have a +ve value, x should be always greater than y...so sufficient.

Ans = B.

I know this is a crude method, but it helps when v have a crunch of time and in GMAT, v always do..
Manager
Joined: 25 Jan 2010
Posts: 108
Location: Calicut, India
Followers: 6

Kudos [?]: 100 [0], given: 40

Re: DS#1 [#permalink]  24 Nov 2011, 10:05
Yes this can be solved using logic. The above 2 explanation is just to illustrate how the logic works.
There are chances for beginners to go with the trap answer option C.
+1 to you.
_________________

If u think this post is useful plz feed me with a kudo

SVP
Joined: 06 Sep 2013
Posts: 2045
Concentration: Finance
GMAT 1: 770 Q0 V
Followers: 26

Kudos [?]: 301 [1] , given: 354

Re: DS#1 [#permalink]  27 Jan 2014, 05:27
1
KUDOS
cleetus wrote:
Is the cost of an Organ more than the cost of a Flute ?

A) Three times the cost of an organ is $15 more than twice the cost of a Flute. B) Five times the cost of an organ is$12 more than six time the cost of a Flute.

Best approach is to do the following

Is Q>F?

Is 5Q>5F?

Statement 2

5Q = 6F+12

Replacing

6F+12>5F

F>-12? Of course

B
Re: DS#1   [#permalink] 27 Jan 2014, 05:27
Similar topics Replies Last post
Similar
Topics:
Soaring television costs accounted for more than half the 9 01 Apr 2007, 12:39
Soaring television costs accounted for more than half the 5 01 Sep 2006, 21:48
Soaring television costs accounted for more than half the 10 21 Jan 2006, 23:31
Soaring television costs accounted for more than half the 4 11 Nov 2005, 12:27
Not only are the cost of organic produce and the 8 29 Sep 2005, 22:19
Display posts from previous: Sort by