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 5 of 27.
Rayudu said:
1 decade ago
Reflex angle means ?
Sumit said:
1 decade ago
Reflex angle means angle is greater than 180 and less than 360. for example angle 190,210,310 etc are as reflex angles.
Sandy said:
1 decade ago
From the above example, we have already got the answr for 10.25 in hour hand, then why we agin find the deg for minute hand that too only for 25 min not 10 hours? please clear my doubt.
Sathish said:
1 decade ago
Thank you sundar.
Aparna said:
1 decade ago
Thanks a lot Venu. Lekkala and Sumit.
Umesh said:
1 decade ago
Angle traced out by hour hand in 1 hour = 360/12 = 30 deg.
Angle traced out in 10 hours = 300 deg.
angle traced out in (25/60) hrs. = 30 *5/12= 25/2
total angle = 300 + 12.5 =312.5 deg
Angle traced out in 10 hours = 300 deg.
angle traced out in (25/60) hrs. = 30 *5/12= 25/2
total angle = 300 + 12.5 =312.5 deg
(1)
Avinash said:
1 decade ago
@Umesh
Your answer is quite good man! Thank you.
Your answer is quite good man! Thank you.
Deepa said:
1 decade ago
@umesh
Why did you multiply 30 to 5/12?
Why did you multiply 30 to 5/12?
Gobi said:
1 decade ago
@Deepa
Because 30 degree is to mention for one hour so the angle traced out in (1 hr= 30 degrees) * (25 min ie., 25/60 hrs) = 25/2.
Because 30 degree is to mention for one hour so the angle traced out in (1 hr= 30 degrees) * (25 min ie., 25/60 hrs) = 25/2.
Gopal said:
1 decade ago
Thank you Venu. Lekkala.
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