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

It is currently 23 Feb 2019, 07:14

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 February
PrevNext
SuMoTuWeThFrSa
272829303112
3456789
10111213141516
17181920212223
242526272812
Open Detailed Calendar
  • FREE Quant Workshop by e-GMAT!

     February 24, 2019

     February 24, 2019

     07:00 AM PST

     09:00 AM PST

    Get personalized insights on how to achieve your Target Quant Score.
  • Free GMAT RC Webinar

     February 23, 2019

     February 23, 2019

     07:00 AM PST

     09:00 AM PST

    Learn reading strategies that can help even non-voracious reader to master GMAT RC. Saturday, February 23rd at 7 AM PT

What is the difference in the degree measures of the angles formed by

  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: 53066
What is the difference in the degree measures of the angles formed by  [#permalink]

Show Tags

New post 31 Jan 2019, 21:03
2
5
00:00
A
B
C
D
E

Difficulty:

  75% (hard)

Question Stats:

42% (01:51) correct 58% (01:22) wrong based on 46 sessions

HideShow timer Statistics

What is the difference in the degree measures of the angles formed by the hour hand and the minute hand of a clock at 12:35 and 12:36? ​

A) 1°

B) ​5°

C) ​5.5°

D) ​6°

E) ​30°

_________________

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

CEO
CEO
User avatar
P
Status: GMATINSIGHT Tutor
Joined: 08 Jul 2010
Posts: 2799
Location: India
GMAT: INSIGHT
Schools: Darden '21
WE: Education (Education)
Reviews Badge
What is the difference in the degree measures of the angles formed by  [#permalink]

Show Tags

New post 31 Jan 2019, 22:44
1
1
Bunuel wrote:
What is the difference in the degree measures of the angles formed by the hour hand and the minute hand of a clock at 12:35 and 12:36? ​

A) 1°

B) ​5°

C) ​5.5°

D) ​6°

E) ​30°



12 O'clock the angle between the hour hand and minute hand = 0º

CONCEPT: The minute hand moves in 1 min = 6º
The Hour hand moves in 1 min = (1/2)º

i.e. Change of angle between minute hand and hour hand in every minute = 6-(1/2) = 11/2º


i.e at 12:35, change in angle in 35 minutes after 12 o'clock = 35*(11/2) = 385/2
i.e. at 12:36, change in angle in 36 minutes after 12 o'clock = 36*(11/2) = 396/2

Difference of angles = (396/2)-(385/2) = 11/2º

Answer: Option C
_________________

Prosper!!!
GMATinsight
Bhoopendra Singh and Dr.Sushma Jha
e-mail: info@GMATinsight.com I Call us : +91-9999687183 / 9891333772
Online One-on-One Skype based classes and Classroom Coaching in South and West Delhi
http://www.GMATinsight.com/testimonials.html

ACCESS FREE GMAT TESTS HERE:22 ONLINE FREE (FULL LENGTH) GMAT CAT (PRACTICE TESTS) LINK COLLECTION

SVP
SVP
User avatar
G
Joined: 18 Aug 2017
Posts: 1928
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
GMAT ToolKit User Premium Member CAT Tests
Re: What is the difference in the degree measures of the angles formed by  [#permalink]

Show Tags

New post 01 Feb 2019, 09:42
1
Bunuel wrote:
What is the difference in the degree measures of the angles formed by the hour hand and the minute hand of a clock at 12:35 and 12:36? ​

A) 1°

B) ​5°

C) ​5.5°

D) ​6°

E) ​30°


angle between minute and hr
11/2* min-30 * hr

12:36 angle - 12:35 angle
11/2 * 36-30 * 12 - 11/2 * 35 + 30 * 12
=> 11/2 * ( 36-35)
IMO C
_________________

If you liked my solution then please give Kudos. Kudos encourage active discussions.

Manager
Manager
avatar
G
Joined: 01 Feb 2017
Posts: 188
Re: What is the difference in the degree measures of the angles formed by  [#permalink]

Show Tags

New post 02 Feb 2019, 02:28
1
Minutes hand completes one rotation of clock in 60 minutes. Therefore, in one minute, it will swipe 360/60= 6 Deg.

Hours hand completes one rotation of clock in 12hours (720 minutes). Therefore, in one minute, it will swipe 360/720= 0.5 Deg.

So, resultant change in angle will be 6-0.5 = 5.5 degree.

Ans C

Posted from my mobile device
VP
VP
avatar
P
Joined: 07 Dec 2014
Posts: 1154
Re: What is the difference in the degree measures of the angles formed by  [#permalink]

Show Tags

New post 02 Feb 2019, 14:25
Bunuel wrote:
What is the difference in the degree measures of the angles formed by the hour hand and the minute hand of a clock at 12:35 and 12:36? ​

A) 1°

B) ​5°

C) ​5.5°

D) ​6°

E) ​30°


[(36-36/12)-(35-35/12)]*6°=5.5°
C
GMAT Club Bot
Re: What is the difference in the degree measures of the angles formed by   [#permalink] 02 Feb 2019, 14:25
Display posts from previous: Sort by

What is the difference in the degree measures of the angles formed by

  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®.