Aptitude - Clock - Discussion
Discussion Forum : Clock - General Questions (Q.No. 3)
3.
A clock is started at noon. By 10 minutes past 5, the hour hand has turned through:
Answer: Option
Explanation:
Angle traced by hour hand in 12 hrs = 360°.
| Angle traced by hour hand in 5 hrs 10 min. i.e., | 31 | hrs = |  |
360 | x | 31 |  |
° | = 155°. |
| 6 | 12 | 6 |
Discussion:
87 comments Page 4 of 9.
Abina said:
1 decade ago
It is very simple, the question is 5hrs and 10 mns. They are asking short hand. So,
In short hand 1 min = 1/2 degree.
1 hr = 60min/2 = 30.
5hr = 5*30 = 150.
1 min = 10/2 = 5.
= 150+5 = 155 degree.
Answer : 155 degree.
In short hand 1 min = 1/2 degree.
1 hr = 60min/2 = 30.
5hr = 5*30 = 150.
1 min = 10/2 = 5.
= 150+5 = 155 degree.
Answer : 155 degree.
SAGAR BISWAS said:
1 decade ago
Nice solution I appreciate.
Jatinder said:
1 decade ago
In 1 min hour hand = 1/2 degree /min.
For 10 min = 10*(1/2) = 5 degree.
In 1 hr hour hand takes 30 degree.
For 5 hr = 5*30 = 150.
And total angle traveled by hr hand = 150+5 = 155 degree.
For 10 min = 10*(1/2) = 5 degree.
In 1 hr hour hand takes 30 degree.
For 5 hr = 5*30 = 150.
And total angle traveled by hr hand = 150+5 = 155 degree.
Shiv said:
1 decade ago
@Shravan Sir your explanation is mind blowing.
Sarawar said:
10 years ago
At n'o clock the angle of hour hand from vertical is 30 n; speed of hour hand is 5 degree per minute; speed of minute hand is 6 dpm.
At 5.10 angle of hour hand from vertical 5*30+0.5*10 = 155 degree.
Angle of minute hand from vertical 6*10 = 60;
Angle between hour and minute hand = 155-60 = 96.
Reflex angle 360-96 = 264.
At 5.10 angle of hour hand from vertical 5*30+0.5*10 = 155 degree.
Angle of minute hand from vertical 6*10 = 60;
Angle between hour and minute hand = 155-60 = 96.
Reflex angle 360-96 = 264.
Hemanth reddy said:
10 years ago
5 hrs 10 min's (given) > 1 hr = 30 degrees > 5 hrs = 150 degrees.
60 min = 30 degrees > 1 min = 0.5 degrees > 10 min = 5 degrees 5 hrs 10 min = 150+5 = 155.
60 min = 30 degrees > 1 min = 0.5 degrees > 10 min = 5 degrees 5 hrs 10 min = 150+5 = 155.
Mohd faisal said:
10 years ago
Formula = (Section-Difference) multiply by 30 +or- minute/2.
According to Formula time = 5:10.
(10-5) multiply 30+10/2.
= 5*30+5 = 150+5.
155 is answer.
According to Formula time = 5:10.
(10-5) multiply 30+10/2.
= 5*30+5 = 150+5.
155 is answer.
TAPAN TIMANI said:
10 years ago
How to calculate 5.10 to 31/6 please tell me?
Kunwar said:
10 years ago
I'm confused.
1 min is 5.5 degree or 1 min is 6 degree.
1 min is 5.5 degree or 1 min is 6 degree.
Parul saxena said:
10 years ago
In the previous question separate degree was calculated for minute hand. Then why in this question separate degree are not calculated for minute hand?
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