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

It is currently 30 Aug 2014, 20:38

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

What is the angle between the hour and minute hand when the

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Intern
Intern
avatar
Joined: 04 Feb 2004
Posts: 28
Location: USA
Followers: 0

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

What is the angle between the hour and minute hand when the [#permalink] New post 04 Apr 2005, 10:43
What is the angle between the hour and minute hand when the time is 12:24?
Senior Manager
Senior Manager
avatar
Joined: 19 Feb 2005
Posts: 492
Location: Milan Italy
Followers: 1

Kudos [?]: 9 [0], given: 0

GMAT Tests User
 [#permalink] New post 04 Apr 2005, 11:36
mmmmm
tricky game
1) calculate angular speed, which is
0.5 degrees/minute (hours)
60 degrees/minute (minutes)
2) 60*24-0.5*24= 132

:roll:
VP
VP
avatar
Joined: 30 Sep 2004
Posts: 1493
Location: Germany
Followers: 4

Kudos [?]: 46 [0], given: 0

GMAT Tests User
 [#permalink] New post 04 Apr 2005, 11:53
360/60min=6degree/min

x*60min=24min => x=0,4 => 0,4 * 5min=2

24min-2min=22min*6=132!
Senior Manager
Senior Manager
avatar
Joined: 19 Feb 2005
Posts: 492
Location: Milan Italy
Followers: 1

Kudos [?]: 9 [0], given: 0

GMAT Tests User
 [#permalink] New post 04 Apr 2005, 11:57
:-D :-D :-D :-D :cool
Intern
Intern
avatar
Joined: 04 Feb 2004
Posts: 28
Location: USA
Followers: 0

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

 [#permalink] New post 04 Apr 2005, 13:06
christoph,

could you please explain why you divide 360 by 60? where does the 60 come from?
Intern
Intern
avatar
Joined: 10 Mar 2005
Posts: 10
Followers: 0

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

Should it be... [#permalink] New post 04 Apr 2005, 13:57
60 min = 360 degrees
24 min = x degrees

x= 24*360/60 = 144 degrees
Director
Director
avatar
Joined: 18 Feb 2005
Posts: 674
Followers: 1

Kudos [?]: 2 [0], given: 0

GMAT Tests User
 [#permalink] New post 04 Apr 2005, 14:47
132 it is

Take hours hand

12 hours it moves it make 360 degrees
so every 30 degrees it moves for 1 hour or 60 mins...

So for 24 mins it moves 12 degrees

Now take minutes hand

For every 60 mins it makes 360 degrees
so for 24 mins it makes 144 degrees.

Now find the diff = 132 degrees
Manager
Manager
User avatar
Joined: 04 Mar 2005
Posts: 107
Location: NYC
Followers: 2

Kudos [?]: 2 [0], given: 0

GMAT Tests User
Re: Angle [#permalink] New post 05 Apr 2005, 06:47
rc1979 wrote:
What is the angle between the hour and minute hand when the time is 12:24?



First calculate angular movement for minute hand(MH):
In 1 hr MH moves 360 degrees
Thus in 24 minutes it moves 360/60 * 24 = 144

Next calculate angular movement of the hr hand (HH):
In 12 hrs HH moves ->360 deg
In 1 hr(60 min) it moves -30 deg
Thus in 24 min it moves -> 24/60 * 30 = 12 deg

Therefore, the angle between MH & HH = 144 -12 = 132 degrees.
Intern
Intern
avatar
Joined: 10 Mar 2005
Posts: 10
Followers: 0

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

ok. i see now [#permalink] New post 05 Apr 2005, 07:41
I see where I made a mistake..... I forgot that the hour hand moves too as the minute hand moves.... Thanks
Director
Director
avatar
Joined: 27 Dec 2004
Posts: 910
Followers: 1

Kudos [?]: 12 [0], given: 0

GMAT Tests User
Re: ok. i see now [#permalink] New post 06 Apr 2005, 20:07
Kama2007 wrote:
I see where I made a mistake..... I forgot that the hour hand moves too as the minute hand moves.... Thanks


at first i got 144 until i considered that the hour hand does move. Tricky!
Re: ok. i see now   [#permalink] 06 Apr 2005, 20:07
    Similar topics Author Replies Last post
Similar
Topics:
At 4.40 what is the minor angle between the hour hand and gdmat720 3 26 May 2008, 12:39
What is the angle between the minute and the hour hand of sondenso 7 15 May 2008, 21:00
What is the angle between the minute and the hour hands of ggarr 1 18 Feb 2007, 01:15
what is the angle between the minute and hour hand of the pawan82 2 15 Nov 2006, 05:21
What is the angle in degrees between hour hand & minute vivek123 4 20 Feb 2006, 20:04
Display posts from previous: Sort by

What is the angle between the hour and minute hand when the

  Question banks Downloads My Bookmarks Reviews Important topics  


cron

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®.