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

 It is currently 06 May 2015, 20:45

### 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

# A store sells pens and pencils. Provided that the price of

Author Message
TAGS:
CEO
Joined: 21 Jan 2007
Posts: 2764
Location: New York City
Followers: 9

Kudos [?]: 350 [0], given: 4

A store sells pens and pencils. Provided that the price of [#permalink]  30 Oct 2007, 08:17
A store sells pens and pencils.
Provided that the price of each item is expressed as a whole number of cents, how much do 5 pencils cost?

1. 5 pencils and 3 pens cost 30 cents
2. 4 pencils and 4 pens cost 32 cents
SVP
Joined: 29 Aug 2007
Posts: 2497
Followers: 57

Kudos [?]: 557 [0], given: 19

Re: System of Linear Equations [#permalink]  30 Oct 2007, 08:29
bmwhype2 wrote:
A store sells pens and pencils.
Provided that the price of each item is expressed as a whole number of cents, how much do 5 pencils cost?

1. 5 pencils and 3 pens cost 30 cents
2. 4 pencils and 4 pens cost 32 cents

A: 5pc + 3pn =30
5x3 + 3x5 =30
Senior Manager
Joined: 28 Jun 2007
Posts: 320
Followers: 1

Kudos [?]: 22 [0], given: 0

Re: System of Linear Equations [#permalink]  30 Oct 2007, 08:45
bmwhype2 wrote:
A store sells pens and pencils.
Provided that the price of each item is expressed as a whole number of cents, how much do 5 pencils cost?

1. 5 pencils and 3 pens cost 30 cents
2. 4 pencils and 4 pens cost 32 cents

I get A.

(1) 5x + 3y = 30
The only solution that fits is x = 3, y = 5. Hence, sufficient.

(2) 4x + 4y = 32
Could be x=4, y=4 OR x=2, y=6. Hence, insufficient.
Re: System of Linear Equations   [#permalink] 30 Oct 2007, 08:45
Similar topics Replies Last post
Similar
Topics:
3 A store sells erasers for 0.23$per piece and pencil for 0.1 2 26 Jul 2014, 09:36 3 A certain store sold pens for$0.35 each and pencils for $0. 4 24 Oct 2013, 08:57 A store selling price..... 2 28 Oct 2010, 21:28 A stationery store sells pens and pencils. If the price of 3 02 Aug 2010, 19:37 Pen regularly sell for$15 a pair and Pencil regularly sell 4 28 Dec 2005, 08:27
Display posts from previous: Sort by