It is currently 25 Feb 2018, 07:55

Close

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
Your Progress

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

A store currently charges the same price per pound of salad. If the cu

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Expert Post
Math Revolution GMAT Instructor
User avatar
D
Joined: 16 Aug 2015
Posts: 4908
GPA: 3.82
A store currently charges the same price per pound of salad. If the cu [#permalink]

Show Tags

New post 09 May 2017, 00:33
Expert's post
7
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

53% (01:47) correct 47% (01:54) wrong based on 51 sessions

HideShow timer Statistics

A store currently charges the same price per pound of salad. If the current price per pound were to be increased by $0.2, 0.5 pound smaller salad could be bought for $9. What is the current price of salad per pound?

A. $1.6
B. $1.7
C. $1.72
D. $1.8
E. $1.84
[Reveal] Spoiler: OA

_________________

MathRevolution: Finish GMAT Quant Section with 10 minutes to spare
The one-and-only World’s First Variable Approach for DS and IVY Approach for PS with ease, speed and accuracy.
Find a 10% off coupon code for GMAT Club members.
“Receive 5 Math Questions & Solutions Daily”
Unlimited Access to over 120 free video lessons - try it yourself
See our Youtube demo

Intern
Intern
avatar
B
Joined: 12 Nov 2016
Posts: 16
Re: A store currently charges the same price per pound of salad. If the cu [#permalink]

Show Tags

New post 09 May 2017, 01:30
Is there a more efficient way to solve it than value substitution? If yes, could you please explain the same?
Regards
Manager
Manager
User avatar
B
Joined: 02 Aug 2013
Posts: 64
Location: India
Concentration: Technology, Leadership
WE: Programming (Consulting)
GMAT ToolKit User
Re: A store currently charges the same price per pound of salad. If the cu [#permalink]

Show Tags

New post 09 May 2017, 11:35
Please provide the solution
2 KUDOS received
BSchool Forum Moderator
User avatar
V
Joined: 26 Feb 2016
Posts: 2093
Location: India
GPA: 3.12
Premium Member CAT Tests
Re: A store currently charges the same price per pound of salad. If the cu [#permalink]

Show Tags

New post 09 May 2017, 22:13
2
This post received
KUDOS
IMO, the best option is go from answer choices.
Let the price per pound of salad be x, size per salad be y
(x+0.2)(y-0.5) = 9 = xy
Since we have the price per pound, substitute the answer choices and see which of them makes sense.

In considering choice A, x=1.6
1.8(y-0.5) = 9
1.8y = 9.9
y = 5.5 Here, the value of xy is not 9 (1.6*5)

Consider choice B, x=1.7
1.9(y-0.5) = 9
1.9y = 9.95
y = 5.24
Here, the value of xy is not 9 (1.7*5.24)

Consider choice D, x=1.8
2(y-0.5) = 9
2y = 10
y = 5
Here, the value of xy is 9 (1.8*5)

(Option D)
_________________

Stay hungry, Stay foolish

2017-2018 MBA Deadlines

Class of 2020: Rotman Thread | Schulich Thread
Class of 2019: Sauder Thread

Expert Post
Math Revolution GMAT Instructor
User avatar
D
Joined: 16 Aug 2015
Posts: 4908
GPA: 3.82
Re: A store currently charges the same price per pound of salad. If the cu [#permalink]

Show Tags

New post 11 May 2017, 00:25
==> If you set the price of the salad per pound as $p, for n pounds, you get np=(n-0.5)(p+0.2)=9. From np=np+0.2n-0.5p-0.1, if you substitute 0.2n=0.5p+0.1, and n=2.5p+0.5, you get p=1.8.

The answer is D.
Answer: D
_________________

MathRevolution: Finish GMAT Quant Section with 10 minutes to spare
The one-and-only World’s First Variable Approach for DS and IVY Approach for PS with ease, speed and accuracy.
Find a 10% off coupon code for GMAT Club members.
“Receive 5 Math Questions & Solutions Daily”
Unlimited Access to over 120 free video lessons - try it yourself
See our Youtube demo

Re: A store currently charges the same price per pound of salad. If the cu   [#permalink] 11 May 2017, 00:25
Display posts from previous: Sort by

A store currently charges the same price per pound of salad. If the cu

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.