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

It is currently 20 Oct 2014, 03:25

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

Between 12:24 and 14:36 the HOUR hand of a clock turns by

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
CEO
CEO
User avatar
Joined: 21 Jan 2007
Posts: 2769
Location: New York City
Followers: 8

Kudos [?]: 252 [0], given: 4

Between 12:24 and 14:36 the HOUR hand of a clock turns by [#permalink] New post 02 Nov 2007, 08:03
1
This post was
BOOKMARKED
Between 12:24 and 14:36 the HOUR hand of a clock turns by how many degrees?

Between 12:24 and 14:36 the MINUTE hand of a clock turns by how many degrees?
VP
VP
User avatar
Joined: 08 Jun 2005
Posts: 1156
Followers: 6

Kudos [?]: 118 [0], given: 0

 [#permalink] New post 03 Nov 2007, 09:27
Between 12:24 and 14:36 the MINUTE hand of a clock turns by how many degrees?

degree per minute = 360/(60*12) = 1/2

2 houres and 12 minutes = 132

132*360/720 = 66


:)
Senior Manager
Senior Manager
avatar
Joined: 19 Feb 2007
Posts: 328
Followers: 1

Kudos [?]: 8 [0], given: 0

 [#permalink] New post 03 Nov 2007, 09:45
KillerSquirrel wrote:
Between 12:24 and 14:36 the MINUTE hand of a clock turns by how many degrees?

degree per minute = 360/(60*12) = 1/2

2 houres and 12 minutes = 132

132*360/720 = 66


:)


degree per minute = 360/(60*12) = 1/2

what is this 12 over here??
VP
VP
User avatar
Joined: 08 Jun 2005
Posts: 1156
Followers: 6

Kudos [?]: 118 [0], given: 0

 [#permalink] New post 03 Nov 2007, 09:56
sidbidus wrote:
KillerSquirrel wrote:
Between 12:24 and 14:36 the MINUTE hand of a clock turns by how many degrees?

degree per minute = 360/(60*12) = 1/2

2 houres and 12 minutes = 132

132*360/720 = 66


:)


degree per minute = 360/(60*12) = 1/2

what is this 12 over here??


12 hours

:)
Senior Manager
Senior Manager
avatar
Joined: 19 Feb 2007
Posts: 328
Followers: 1

Kudos [?]: 8 [0], given: 0

 [#permalink] New post 03 Nov 2007, 10:05
But for the minute hand why do you need hours???

For minute hand...

360 for 1hr or 60 minutes

=> degree/ minute = 360/60 = 6

Am I missing something???

I guess you were explaining for the hour hand
VP
VP
User avatar
Joined: 08 Jun 2005
Posts: 1156
Followers: 6

Kudos [?]: 118 [0], given: 0

 [#permalink] New post 03 Nov 2007, 10:19
sidbidus wrote:
But for the minute hand why do you need hours???

For minute hand...

360 for 1hr or 60 minutes

=> degree/ minute = 360/60 = 6

Am I missing something???

I guess you were explaining for the hour hand


ask yourself - how many minutes are there in 12 hours (clock cycle) ?

60*12 = 720

and ask yourself - how many degrees are in one clock cycle (from 12 to 12) = 360

360/720 = 1/2 degree per minute.

:)
Director
Director
avatar
Joined: 11 Jun 2007
Posts: 932
Followers: 1

Kudos [?]: 51 [0], given: 0

 [#permalink] New post 03 Nov 2007, 10:22
KillerSquirrel wrote:
sidbidus wrote:
But for the minute hand why do you need hours???

For minute hand...

360 for 1hr or 60 minutes

=> degree/ minute = 360/60 = 6

Am I missing something???

I guess you were explaining for the hour hand


ask yourself - how many minutes are there in 12 hours (clock cycle) ?

60*12 = 720

and ask yourself - how many degrees are in one clock cycle (from 12 to 12) = 360

360/720 = 1/2 degree per minute.

:)


pretty well explained :)

KS, for the hour hand, are the minute and hour hands the same answer with 66 degrees?
VP
VP
User avatar
Joined: 08 Jun 2005
Posts: 1156
Followers: 6

Kudos [?]: 118 [0], given: 0

 [#permalink] New post 03 Nov 2007, 10:35
sidbidus wrote:
KillerSquirrel wrote:
sidbidus wrote:
But for the minute hand why do you need hours???

For minute hand...

360 for 1hr or 60 minutes

=> degree/ minute = 360/60 = 6

Am I missing something???

I guess you were explaining for the hour hand


ask yourself - how many minutes are there in 12 hours (clock cycle) ?

60*12 = 720

and ask yourself - how many degrees are in one clock cycle (from 12 to 12) = 360

360/720 = 1/2 degree per minute.

:)


That's for the hour hand ur talking about........right??


See attachment

:)
Attachments

untitled.GIF
untitled.GIF [ 4.06 KiB | Viewed 1134 times ]

VP
VP
User avatar
Joined: 08 Jun 2005
Posts: 1156
Followers: 6

Kudos [?]: 118 [0], given: 0

 [#permalink] New post 03 Nov 2007, 10:57
beckee529 wrote:
KillerSquirrel wrote:
sidbidus wrote:
But for the minute hand why do you need hours???

For minute hand...

360 for 1hr or 60 minutes

=> degree/ minute = 360/60 = 6

Am I missing something???

I guess you were explaining for the hour hand


ask yourself - how many minutes are there in 12 hours (clock cycle) ?

60*12 = 720

and ask yourself - how many degrees are in one clock cycle (from 12 to 12) = 360

360/720 = 1/2 degree per minute.

:)


pretty well explained :)

KS, for the hour hand, are the minute and hour hands the same answer with 66 degrees?


Yes the same for the hour hand.

360/12 = 30

30*(two hours and 1/5 of an hour) = 30*11/5 = 66

:)
Director
Director
avatar
Joined: 11 Jun 2007
Posts: 932
Followers: 1

Kudos [?]: 51 [0], given: 0

 [#permalink] New post 03 Nov 2007, 11:00
KillerSquirrel wrote:
beckee529 wrote:
KillerSquirrel wrote:
sidbidus wrote:
But for the minute hand why do you need hours???

For minute hand...

360 for 1hr or 60 minutes

=> degree/ minute = 360/60 = 6

Am I missing something???

I guess you were explaining for the hour hand


ask yourself - how many minutes are there in 12 hours (clock cycle) ?

60*12 = 720

and ask yourself - how many degrees are in one clock cycle (from 12 to 12) = 360

360/720 = 1/2 degree per minute.

:)


pretty well explained :)

KS, for the hour hand, are the minute and hour hands the same answer with 66 degrees?


Yes the same for the hour hand.

360/12 = 30

30*(two hours and 1/5 of an hour) = 30*11/5 = 66

:)


good.. thats exactly how i solved
CEO
CEO
User avatar
Joined: 21 Jan 2007
Posts: 2769
Location: New York City
Followers: 8

Kudos [?]: 252 [0], given: 4

 [#permalink] New post 03 Nov 2007, 20:21
6 degrees each minute
30 degrees each hour


solving for the hour hand,
it moved 2 hours and 12 minutes. 12 minutes is 1/5 of an hour or 1/5 of 30 degrees.

2* 30 + 1/5(30)
60+6
66

solving for minutes
the timeframe was 2 hours 12 minutes. we can disregard the 2 hours since it will be in the same position.

12*6 degrees each minute.
72 minutes
VP
VP
User avatar
Joined: 08 Jun 2005
Posts: 1156
Followers: 6

Kudos [?]: 118 [0], given: 0

 [#permalink] New post 03 Nov 2007, 20:54
bmwhype2 wrote:
6 degrees each minute
30 degrees each hour

solving for the hour hand,
it moved 2 hours and 12 minutes. 12 minutes is 1/5 of an hour or 1/5 of 30 degrees.

2* 30 + 1/5(30)
60+6
66

solving for minutes
the timeframe was 2 hours 12 minutes. we can disregard the 2 hours since it will be in the same position.

12*6 degrees each minute.
72 minutes


the red segment is wrong.

:)
CEO
CEO
User avatar
Joined: 21 Jan 2007
Posts: 2769
Location: New York City
Followers: 8

Kudos [?]: 252 [0], given: 4

 [#permalink] New post 03 Nov 2007, 21:10
KillerSquirrel wrote:
bmwhype2 wrote:
6 degrees each minute
30 degrees each hour

solving for the hour hand,
it moved 2 hours and 12 minutes. 12 minutes is 1/5 of an hour or 1/5 of 30 degrees.

2* 30 + 1/5(30)
60+6
66

solving for minutes
the timeframe was 2 hours 12 minutes. we can disregard the 2 hours since it will be in the same position.

12*6 degrees each minute.
72 minutes


the red segment is wrong.

:)


what i mean is

360/60 divisions or minutes = 6 degrees
Manager
Manager
User avatar
Joined: 25 Nov 2006
Posts: 60
Followers: 2

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

 [#permalink] New post 03 Nov 2007, 22:17
The hours hand has a gain of 1/2 degree ever 1 minute.....
so for (36-24)min it has a 6 degree gain.

The minute hand gains 6 degree for every 1 minute.....
so for (36-24)minutes it gains 12*6=72 degrees
VP
VP
avatar
Joined: 10 Jun 2007
Posts: 1467
Followers: 6

Kudos [?]: 108 [0], given: 0

Re: Clock question [#permalink] New post 03 Nov 2007, 22:24
bmwhype2 wrote:
Between 12:24 and 14:36 the HOUR hand of a clock turns by how many degrees?

Between 12:24 and 14:36 the MINUTE hand of a clock turns by how many degrees?


1 minute is 360/60 = 6 degree
So minute hand turned 36-24 = 12*6 = 72 degree

For hour hand, it is a bit tricky because the hour hand also move according to minute hand.

1 hour = 360/12 = 30 degree
At 12.24, the hour hand is at 24/60 * 30 = 12 degree from 12 pm
At 14.36, the hour hand is at 36/60 * 30 = 18 degree from 14 pm = 30+30+18 = 78 degree from 12 pm

Therefore, total gain = 78-12 = 66 degree
CEO
CEO
User avatar
Joined: 09 Sep 2013
Posts: 2782
Followers: 206

Kudos [?]: 42 [0], given: 0

Premium Member
Re: Between 12:24 and 14:36 the HOUR hand of a clock turns by [#permalink] New post 21 Jul 2014, 21:59
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________

GMAT Books | GMAT Club Tests | Best Prices on GMAT Courses | GMAT Mobile App | Math Resources | Verbal Resources

Manager
Manager
avatar
Joined: 25 Apr 2014
Posts: 152
Followers: 0

Kudos [?]: 23 [0], given: 1474

Re: Between 12:24 and 14:36 the HOUR hand of a clock turns by [#permalink] New post 21 Jul 2014, 22:00
Do clock and calendar questions appear in gmat?
Expert Post
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 23330
Followers: 3599

Kudos [?]: 28589 [0], given: 2803

Re: Between 12:24 and 14:36 the HOUR hand of a clock turns by [#permalink] New post 22 Jul 2014, 02:26
Expert's post
Re: Between 12:24 and 14:36 the HOUR hand of a clock turns by   [#permalink] 22 Jul 2014, 02:26
    Similar topics Author Replies Last post
Similar
Topics:
8 Experts publish their posts in the topic What is the angle between the minute and the hour hand of the clock wh ritula 7 16 Nov 2008, 22:15
18 m25 #12 bigfernhead 20 28 Oct 2008, 05:23
Between 10:06 and 12:30, the HOUR hand of the clock turns by bmwhype2 3 07 Dec 2007, 11:36
Between 12:24 and 14:36 the hour hand of a clock turns by? I successstory 3 16 Nov 2006, 17:09
What is the angle between the hour and minute hand when the rc1979 9 04 Apr 2005, 10:43
Display posts from previous: Sort by

Between 12:24 and 14:36 the HOUR hand of a clock turns by

  Question banks Downloads My Bookmarks Reviews Important topics  


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®.