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 24 of 27.
Priya said:
1 decade ago
Calculation for 125/12 are correct ...as sharad said the formula must be reflex angle= 360(deg)- [ang traced by hour hand(deg)- ang traced by min hand(deg)]........ since we consider evreything based on 12 o'clock ..and so subtract 2 hrs from it(10 o'clock) ..also subtract 25 mins in reverse (25 min)....see a clock for reference.... think logically may be...thanks friends for your discussion...
Sharad said:
1 decade ago
Guys. From above example. reflex angle formula it should be like this
Reflex Angle = 360(degree) - ( hour hand[it shd be in degree] - minute hand[it should be in degree] )
Reflex Angle = 360(degree) - ( hour hand[it shd be in degree] - minute hand[it should be in degree] )
Gaurav said:
1 decade ago
10:25= 10+25/60=10+5/12=125/12
Vikas said:
1 decade ago
Please let me know why "Angle traced by hour hand" is calculated for 125 /12 hrs
Akhilrajpandey said:
1 decade ago
Calculation
(10*60)+25/60
where 10 is hour converted into min and add 25 min which is equal to
125/12
(10*60)+25/60
where 10 is hour converted into min and add 25 min which is equal to
125/12
Tarun said:
1 decade ago
What is reflex angle?
Charan said:
1 decade ago
As venu said 10.25 can be simplified easily 10 in hrs and 25 in min so, totally in hrs it is 10+(25/60)=125/12.
Firstly 10.25 indicates the time which is exactly 10 but 25 min fast.
We have to subtract the angle subscribed by min hand.
Lastly reflex angle is the angle >180 and the remainin angle subtended by t, other than the acute angle.
Firstly 10.25 indicates the time which is exactly 10 but 25 min fast.
We have to subtract the angle subscribed by min hand.
Lastly reflex angle is the angle >180 and the remainin angle subtended by t, other than the acute angle.
Jagadeesh said:
1 decade ago
Actually they are 12 hours and we are caluculating 10.25.
So we will be taking directly asa 10+25/12. Because in a clock they will be only 12 hours and in the next step we are calculating for 25 min ie 25/60.
So we will be taking directly asa 10+25/12. Because in a clock they will be only 12 hours and in the next step we are calculating for 25 min ie 25/60.
Pallavi said:
1 decade ago
In this type of question you solve easily with the help of saw hand watch.
Anu said:
1 decade ago
Why "Angle traced by hour hand" is calculated for 125 /12 hrs ?
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