Find all School-related info fast with the new School-Specific MBA Forum
Learn more about the recent changes... close

It is currently 25 May 2013, 22:25
Customize  |  Hide

Search
Register
New posts
Unanswered

The toll for crossing a certain bridge is $0.75 each

  Question banks Downloads My Bookmarks Reviews  
  Oldest Best Reply
Search for:
 
Print view
First unread post
Author Message
TAGS:
Manager
Manager
Joined: 03 Oct 2008
Posts: 67
Followers: 0

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

The toll for crossing a certain bridge is $0.75 each [#permalink] New post 09 Oct 2008, 06:00
The toll for crossing a certain bridge is $0.75 each crossing. Drivers who frequently use the bridge may instead purchase a sticker each month for $13.00 and then pay only $0.30 each crossing during that month. If a particular driver will cross the bridge twice on each of x days next month and will not cross the bridge on any other day, what is the least value of x for which this driver can save money by using the sticker?

A. 14
B. 15
C. 16
D. 28
E. 29
SVP
SVP
Joined: 17 Jun 2008
Posts: 1593
Followers: 7

Kudos [?]: 131 [0], given: 0

GMAT Tests User
Re: math---cross the bridge [#permalink] New post 10 Oct 2008, 02:43
Not sure whether I understood the question properly.

For x days, if the driver uses sticker and if x <=21 then driver will pay $13. But, without sticker, the driver will be 0.75*2*x = 1.5x

In order for the driver to save money, 1.5x > 13 or x > 13/1.5 or x > 8 and the very first answer choice should be the correct answer.
Manager
Manager
Joined: 10 Aug 2008
Posts: 77
Followers: 1

Kudos [?]: 13 [0], given: 0

Re: math---cross the bridge [#permalink] New post 10 Oct 2008, 03:12
lets take it takes x days for better savings. Than
and each day he crosses twice the bridge
So
0.75(2x) = 13 + 0.3(2x)
=> x = 14.44 days

So least number of days is 15
Answer is B)
Intern
Intern
User avatar
Joined: 01 Nov 2005
Posts: 48
Location: New jersey
Followers: 0

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

Re: math---cross the bridge [#permalink] New post 10 Oct 2008, 03:16
I agree with Amit on the solution. What is correct answer btw ?
_________________

Target +700
Life is like a box of chocolate, you never know what you gonna get.. :)

SVP
SVP
Joined: 17 Jun 2008
Posts: 1593
Followers: 7

Kudos [?]: 131 [0], given: 0

GMAT Tests User
Re: math---cross the bridge [#permalink] New post 10 Oct 2008, 04:22
AmitGUPTA wrote:
lets take it takes x days for better savings. Than
and each day he crosses twice the bridge
So
0.75(2x) = 13 + 0.3(2x)
=> x = 14.44 days

So least number of days is 15
Answer is B)


You are right. I missted "then" keyword after "$13" in the question.
Re: math---cross the bridge   [#permalink] 10 Oct 2008, 04:22
    Similar topics Author Replies Last post
Similar
Topics:
 Popular new posts The toll to pass a bridge is $0.75 for each time. Costing ttar 11 22 Mar 2005, 09:49
New posts The toll for crossing a certain bridge is $0.75 each dinesh8 3 02 May 2006, 03:11
New posts a train crosses a bridge in 5a seconds and crosses anotherr sgrover 4 23 Jun 2006, 16:45
New posts The toll for crossing the bridge is $0.75 each crossing. puma 2 01 May 2008, 21:28
New posts EXPERTS_POSTS_IN_THIS_TOPIC The toll for crossing a certain bridge is $0.75 each crossin ajit257 7 03 Jan 2011, 18:22
Display posts from previous: Sort by

The toll for crossing a certain bridge is $0.75 each

  Question banks Downloads My Bookmarks Reviews  
Print view
First unread post

Moderators: Bunuel, VeritasPrepKarishma

Search for:


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

Powered by phpBB © phpBB Group and phpBB SEO

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®.

Main navigation

GMAT Resources

Partners

MBA Resources

www.gmac.com|www.mba.com