Aptitude - Clock - Discussion
Discussion Forum : Clock - General Questions (Q.No. 2)
2.
The reflex angle between the hands of a clock at 10.25 is:
Answer: Option
Explanation:
| Angle traced by hour hand in | 125 | hrs = |  |
360 | x | 125 |  |
° | = 312 | 1 | ° | . |
| 12 | 12 | 12 | 2 |
| Angle traced by minute hand in 25 min = | |
360 | x 25 | |
° | = 150°. |
| 60 |
 Reflex angle = 360° - |
|
312 | 1 | - 150 | |
° | = 360° - 162 | 1 | ° | = 197 | 1° | . |
| 2 | 2 | 2 |
Discussion:
269 comments Page 17 of 27.
Pragna said:
1 decade ago
Will you explain me in a simple way?
Pragna said:
1 decade ago
Is there any alternate method to solve this problem?
Malli Reddy said:
1 decade ago
In general the reflex angle b/n hours hand at 10 and minutes hand at 25 is 210.
But movement of min hand by 25 causes hours hand to move.
12.5 degrees forward (reason:for every min min hand moves 6 degrees causing hours hand 1/2 degree if you don't know this have a clear idea about clocks).
So, subtract 12.5 from 210.
210-12.5 = 197.5.
That's it.
But movement of min hand by 25 causes hours hand to move.
12.5 degrees forward (reason:for every min min hand moves 6 degrees causing hours hand 1/2 degree if you don't know this have a clear idea about clocks).
So, subtract 12.5 from 210.
210-12.5 = 197.5.
That's it.
Vinod said:
1 decade ago
I don't understand this question please help me.
Naresh said:
1 decade ago
Time is 10:25.
Formula = (11/2 (minutes) - 30 (hours)).
(11/2 (25) - 30 (10)).
= 162.5.
RA is 360 - 162.5 = 197.5.
Formula = (11/2 (minutes) - 30 (hours)).
(11/2 (25) - 30 (10)).
= 162.5.
RA is 360 - 162.5 = 197.5.
Md asjad said:
1 decade ago
I could not understand the reflex angle.
Steven said:
1 decade ago
125 were is it coming from?
Neha said:
10 years ago
10:25.
= 10hrs 25mins.
But 60mins = 1hr.
Then 1min = 1/60hr.
So 25mins = 25/60hrs = 5/12 (after dividing by 5).
Hence= 10+5/12hrs.
= (120+5)/12hrs = 125/12.
= 10hrs 25mins.
But 60mins = 1hr.
Then 1min = 1/60hr.
So 25mins = 25/60hrs = 5/12 (after dividing by 5).
Hence= 10+5/12hrs.
= (120+5)/12hrs = 125/12.
Vash said:
10 years ago
Reflex angle is more than 180 but less than 360 angle between 180-360.
Rizwana Mumu said:
10 years ago
What is the acute angle between the hands of hour & minute at 6:25?
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