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 8 of 27.
Sathish said:
1 decade ago
Thank you sundar.
Aparna said:
1 decade ago
Thanks a lot Venu. Lekkala and Sumit.
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.
B.Vamsi Srinivas said:
1 decade ago
Have a look at my solution once...
Time 10:25
Reflex Time...
11:60
-10:25
~~~~~~~
1:35
formulae to find angle
Angle = 11*(m)
---- - 30(h)
2
m = minutes
h = hours
so
now
11*35
= ----- - 30* 1
2
385 - 60
= --------
2
325
=---
2
1
=167 ---
2
Correct me if I'm wrong.
Time 10:25
Reflex Time...
11:60
-10:25
~~~~~~~
1:35
formulae to find angle
Angle = 11*(m)
---- - 30(h)
2
m = minutes
h = hours
so
now
11*35
= ----- - 30* 1
2
385 - 60
= --------
2
325
=---
2
1
=167 ---
2
Correct me if I'm wrong.
Nandhini said:
1 decade ago
This is the formula to calculate the angle.
Angle = min*(11/2)-30*hour.
Angle = min*(11/2)-30*hour.
Mayur said:
1 decade ago
Simple solution.
At 10 o'clock angle between them = 300
for 25min displacement between them = 25*5.5 = 137.5
so, angle between them = 300-137.5 = 162.5
for reflex angle = 300-162.5 = 197.5
At 10 o'clock angle between them = 300
for 25min displacement between them = 25*5.5 = 137.5
so, angle between them = 300-137.5 = 162.5
for reflex angle = 300-162.5 = 197.5
Ravi said:
1 decade ago
Angle traced in 1 hour=360/12=30 angle
Angle traced in 10 hours=30*10=300 angle
Angle traced in 25min=25/60hour=30*25/60 angle=25/2=12.5 angle=12(1/2)
total Angle traced in 10hour25min=300+12.5 angle =312(1/2)
Angle traced by minute hand in 25 min =(360/60)*25=150 angle
hence 312(1/2)-150=197.5=197(1/2)
Angle traced in 10 hours=30*10=300 angle
Angle traced in 25min=25/60hour=30*25/60 angle=25/2=12.5 angle=12(1/2)
total Angle traced in 10hour25min=300+12.5 angle =312(1/2)
Angle traced by minute hand in 25 min =(360/60)*25=150 angle
hence 312(1/2)-150=197.5=197(1/2)
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