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# M21#27

Author Message
Senior Manager
Joined: 29 Sep 2009
Posts: 391

Kudos [?]: 41 [0], given: 5

GMAT 1: 690 Q47 V38

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16 Oct 2010, 12:20
Between 10:06 and 12:30 the hour hand of the clock turns by

(C) 2008 GMAT Club - m21#27

* 66 degrees
* 70 degrees
* 72 degrees
* 75 degrees
* 78 degrees
12 hours = 360 degrees (Corrected)
1 hr = 15 degs
2hrs = 30 degs
24/60 or 2/5 hrs = (2*15)/5 = 6 degs
Total angular displacement: 30 + 6 = 36 degrees.

Last edited by vicksikand on 16 Oct 2010, 15:16, edited 1 time in total.

Kudos [?]: 41 [0], given: 5

Retired Moderator
Joined: 02 Sep 2010
Posts: 793

Kudos [?]: 1184 [0], given: 25

Location: London

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16 Oct 2010, 13:19
vicksikand wrote:
Between 10:06 and 12:30 the hour hand of the clock turns by

(C) 2008 GMAT Club - m21#27

* 66 degrees
* 70 degrees
* 72 degrees
* 75 degrees
* 78 degrees
12 hours = 180 degrees
1 hr = 15 degs
2hrs = 30 degs
24/60 or 2/5 hrs = (2*15)/5 = 6 degs
Total angular displacement: 30 + 6 = 36 degrees.

12 hours = 360 degrees
So 2hrs = 60 degrees
24mins = 24/60*30 = 12 degrees

So 72 degrees
_________________

Kudos [?]: 1184 [0], given: 25

Senior Manager
Joined: 29 Sep 2009
Posts: 391

Kudos [?]: 41 [0], given: 5

GMAT 1: 690 Q47 V38

### Show Tags

16 Oct 2010, 15:15
shrouded1 wrote:
vicksikand wrote:
Between 10:06 and 12:30 the hour hand of the clock turns by

(C) 2008 GMAT Club - m21#27

* 66 degrees
* 70 degrees
* 72 degrees
* 75 degrees
* 78 degrees
12 hours = 180 degrees
1 hr = 15 degs
2hrs = 30 degs
24/60 or 2/5 hrs = (2*15)/5 = 6 degs
Total angular displacement: 30 + 6 = 36 degrees.

12 hours = 360 degrees
So 2hrs = 60 degrees
24mins = 24/60*30 = 12 degrees

So 72 degrees

I dont believe it I messed up on that - 12 hrs = 360 degrees. Now thats a major oops!

Kudos [?]: 41 [0], given: 5

Re: M21#27   [#permalink] 16 Oct 2010, 15:15
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# M21#27

Moderator: Bunuel

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