GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 13 Nov 2018, 10:57

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 in November
PrevNext
SuMoTuWeThFrSa
28293031123
45678910
11121314151617
18192021222324
2526272829301
Open Detailed Calendar
  • Essential GMAT Time-Management Hacks

     November 14, 2018

     November 14, 2018

     07:00 PM PST

     08:00 PM PST

    Join the webinar and learn time-management tactics that will guarantee you answer all questions, in all sections, on time. Save your spot today! Nov. 14th at 7 PM PST
  • $450 Tuition Credit & Official CAT Packs FREE

     November 15, 2018

     November 15, 2018

     10:00 PM MST

     11:00 PM MST

    EMPOWERgmat is giving away the complete Official GMAT Exam Pack collection worth $100 with the 3 Month Pack ($299)

If the circumference of circle P is 15.174 and the circumference of

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

Hide Tags

Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 50571
If the circumference of circle P is 15.174 and the circumference of  [#permalink]

Show Tags

New post 14 Nov 2017, 22:42
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

80% (01:31) correct 20% (01:36) wrong based on 45 sessions

HideShow timer Statistics

If the circumference of circle P is 15.174 and the circumference of circle Q is 6.28, then the diameter of circle P minus the diameter of circle Q is approximately equal to

(A) 1.5
(B) 3.0
(C) 5.5
(D) 9.0
(E) 9.4

_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | 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

Manager
Manager
User avatar
S
Joined: 05 Dec 2016
Posts: 244
Concentration: Strategy, Finance
GMAT 1: 620 Q46 V29
GMAT ToolKit User
Re: If the circumference of circle P is 15.174 and the circumference of  [#permalink]

Show Tags

New post 14 Nov 2017, 23:48
P-Q=15,174/6,28 - 6,28/6,28~(15-6)/6~1,5
Answer A
Senior PS Moderator
User avatar
V
Joined: 26 Feb 2016
Posts: 3302
Location: India
GPA: 3.12
Premium Member CAT Tests
Re: If the circumference of circle P is 15.174 and the circumference of  [#permalink]

Show Tags

New post 15 Nov 2017, 00:08
1
Bunuel wrote:
If the circumference of circle P is 15.174 and the circumference of circle Q is 6.28, then the diameter of circle P minus the diameter of circle Q is approximately equal to

(A) 1.5
(B) 3.0
(C) 5.5
(D) 9.0
(E) 9.4


Let x be the radius of the circle P and y the radius of the circle Q.

2 * Pi * x = 15.174
2 * Pi * y = 6.28

2x - 2y = 1/Pi * (15.174 - 6.28) = 8.894/3.14 which is approximately 3

Therefore, the difference in diameters of both the circle is 3.0(Option B)
_________________

You've got what it takes, but it will take everything you've got

Manager
Manager
User avatar
S
Joined: 05 Dec 2016
Posts: 244
Concentration: Strategy, Finance
GMAT 1: 620 Q46 V29
GMAT ToolKit User
Re: If the circumference of circle P is 15.174 and the circumference of  [#permalink]

Show Tags

New post 15 Nov 2017, 00:24
pushpitkc wrote:
Bunuel wrote:
If the circumference of circle P is 15.174 and the circumference of circle Q is 6.28, then the diameter of circle P minus the diameter of circle Q is approximately equal to

(A) 1.5
(B) 3.0
(C) 5.5
(D) 9.0
(E) 9.4


Let x be the radius of the circle P and y the radius of the circle Q.

2 * Pi * x = 15.174
2 * Pi * y = 6.28

2x - 2y = 1/Pi * (15.174 - 6.28) = 8.894/3.14 which is approximately 3

Therefore, the difference in diameters of both the circle is 3.0(Option B)


You're correct. I've messed up with radius and diameter :grin:
GMAT Club Bot
Re: If the circumference of circle P is 15.174 and the circumference of &nbs [#permalink] 15 Nov 2017, 00:24
Display posts from previous: Sort by

If the circumference of circle P is 15.174 and the circumference of

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


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| 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®.