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

It is currently 24 Aug 2016, 18:51
GMAT Club Tests

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

A turtle is crossing a field, how many meters total did he

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

Hide Tags

Senior Manager
Senior Manager
User avatar
Status: Not afraid of failures, disappointments, and falls.
Joined: 20 Jan 2010
Posts: 292
Concentration: Technology, Entrepreneurship
WE: Operations (Telecommunications)
Followers: 17

Kudos [?]: 215 [0], given: 247

GMAT ToolKit User Premium Member CAT Tests
A turtle is crossing a field, how many meters total did he [#permalink]

Show Tags

New post 06 Mar 2010, 00:34
1
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

67% (01:37) correct 33% (01:42) wrong based on 46 sessions

HideShow timer Statistics

Plzz! solve & explain following questions.

A turtle is crossing a field, how many meters total did he pass?
(1) The average speed of the turtle is 2 meters per minute.
(2) Had the turtle walked 1 meter per minute faster than his average speed it would have finished the same path 40 minutes earlier.

OA
[Reveal] Spoiler:
C


If Q and T are integers, what is the value of Q?
(1) Q = 2T/7.
(2) T+7/2 = 7(Q+2)/4

OA
[Reveal] Spoiler:
E


Is the square root of A an integer?
(1) The last digit of A is 8 .
(2) A is divisible by 6.
OA
[Reveal] Spoiler:
A

_________________

"I choose to rise after every fall"
Target=770
http://challengemba.blogspot.com
Kudos??

Expert Post
1 KUDOS received
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 34420
Followers: 6251

Kudos [?]: 79415 [1] , given: 10016

Re: DS questions [#permalink]

Show Tags

New post 06 Mar 2010, 06:07
1
This post received
KUDOS
Expert's post
A turtle is crossing a field, how many meters total did he pass?
(1) The average speed of the turtle is 2 meters per minute.
(2) Had the turtle walked 1 meter per minute faster than his average speed it would have finished the same path 40 minutes earlier.

\(d=rt\), where \(d\) is the distance covered, \(r\) rate and \(t\) time. Question: \(d=?\)
(1) \(r=2\). Clearly not sufficient.
(2) \((r+1)(t-40)=d\). Clearly not sufficient.

(1)+(2) \(r=2\) and \((r+1)(t-40)=d\) --> \(3(t-40)=d\), \(t=\frac{d+120}{3}\) --> \(d=rt=2\frac{d+120}{3}\) --> \(d=240\). Sufficient.

Answer: C.

If Q and T are integers, what is the value of Q?
(1) \(q=\frac{2t}{7}\). --> \(7q=2t\). Not sufficient to calculate the value of \(q\).
(2) \(\frac{t+7}{2}=\frac{7(q+2)}{4}\) --> \(2t+14=7q+14\) --> \(7q=2t\). Same info as above not sufficient.

(1)+(2) Nothing new. Not sufficient.

Answer: E.


Is the square root of A an integer?
Question: is \(\sqrt{a}=int\) true? Or is \(int^2=a\) true?

(1) The last digit of A is 8 --> integer raised to the power of two can not end with 8 (it can end only with 0, 1, 4, 5, 6, 9). So \(a\) is not the square of an integer. Sufficient.

(2) A is divisible by 6. If \(a=6\), \(\sqrt{a}\neq{int}\) BUT if \(a=36\), \(\sqrt{a}=\sqrt{36}=6={int}\). Two different answers, not sufficient.

Answer: A.
_________________

New to the Math Forum?
Please read this: All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics

Senior Manager
Senior Manager
User avatar
Status: Not afraid of failures, disappointments, and falls.
Joined: 20 Jan 2010
Posts: 292
Concentration: Technology, Entrepreneurship
WE: Operations (Telecommunications)
Followers: 17

Kudos [?]: 215 [0], given: 247

GMAT ToolKit User Premium Member CAT Tests
Re: DS questions [#permalink]

Show Tags

New post 06 Mar 2010, 06:59
Thanks for the explanation guys!
Really appreciated.
And yea, nitish you are right it's a typo mistake thank you for indicating that.
_________________

"I choose to rise after every fall"
Target=770
http://challengemba.blogspot.com
Kudos??

Re: DS questions   [#permalink] 06 Mar 2010, 06:59
    Similar topics Author Replies Last post
Similar
Topics:
1 Experts publish their posts in the topic How long did it take Henry to drive to work last Wednesday? (He did no Bunuel 1 19 May 2016, 03:24
5 Experts publish their posts in the topic A wheel of radius 2 meters is turning at a constant speed. How many re Bunuel 1 19 May 2016, 03:19
5 Experts publish their posts in the topic How many hours did Suresh travel yesterday? SravnaTestPrep 5 19 Mar 2013, 23:11
3 Experts publish their posts in the topic How many computers did Michael, a salesman for the computer nelz007 2 01 Nov 2012, 02:12
25 Experts publish their posts in the topic How many hours did it take Dale to drive shrive555 9 20 Dec 2011, 07:47
Display posts from previous: Sort by

A turtle is crossing a field, how many meters total did he

  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 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®.