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:
89 comments Page 3 of 9.
Priya said:
6 years ago
1hrs=30°
So 5 hrs 10min =(5+1/6)*30°. i.e
1hrs = 60min
1min =1/6
10min = 10/60 = 1/6
= (31/6)*30.
= 155°.
So 5 hrs 10min =(5+1/6)*30°. i.e
1hrs = 60min
1min =1/6
10min = 10/60 = 1/6
= (31/6)*30.
= 155°.
(1)
Sasidhar said:
1 decade ago
Here angle In 12h is = 360 degree
angle in 10 PAST 5 means 5:10
h=5, m=10
Now
|30h-11/2m|= degree
|30*5-11/2*10| = 95 degree
Now degree=360-95=155 degree. Got it friends?
angle in 10 PAST 5 means 5:10
h=5, m=10
Now
|30h-11/2m|= degree
|30*5-11/2*10| = 95 degree
Now degree=360-95=155 degree. Got it friends?
(1)
Shravan purohit said:
1 decade ago
@navaneetha
Given : our hour hand started at noon i.e. 12 o'clock
and 10 minutes past 5 i.e. 5 hour 10 minutes
we find angle between 12 and 5.10 o'clock
firstly we convert 5hour 10min into minitus 5*60+10=310min
and 310min convert into hour 310/60=31/6
In 12h = 360
So in 31/6 h= (360/12)(31/6)=155 degree.
Given : our hour hand started at noon i.e. 12 o'clock
and 10 minutes past 5 i.e. 5 hour 10 minutes
we find angle between 12 and 5.10 o'clock
firstly we convert 5hour 10min into minitus 5*60+10=310min
and 310min convert into hour 310/60=31/6
In 12h = 360
So in 31/6 h= (360/12)(31/6)=155 degree.
(1)
Vaibhav said:
6 years ago
Hr hand move 10 min in 5 hrs so afternoon means start from 12 then after 5 hrs show 5 o'clock but 10 min means 10/2=5° so 12 to 5 150°+5°=155°.
(1)
Mudasir rashid said:
8 years ago
Firstly, convert 5hrin minutes.
5*60=300
Add 10 min
=310min.
Now convert 310min in hr.
310min=310/60=31/6hr.
1 hr=(360/12)°.
31/6hr=(360/12)*31/6=155°.
5*60=300
Add 10 min
=310min.
Now convert 310min in hr.
310min=310/60=31/6hr.
1 hr=(360/12)°.
31/6hr=(360/12)*31/6=155°.
Ajay kumar aluvala said:
10 years ago
5:10 = 5+(10/60) = 5+1/6 = 31/6 hrs.
1 hr = 30 degrees,
31/6 hrs = 31/6 * 30 = 155 degrees.
1 hr = 30 degrees,
31/6 hrs = 31/6 * 30 = 155 degrees.
Morpankh said:
5 years ago
For hour hand (HH), we have a notation. Right?
Sowmya said:
10 years ago
12pm to 5pm = 5hrs.
1hr = 30°.
Therefore, 5 * 30 = 150°.
Tilting time = 10min.
1 min = 1/2°.
Therefore, 10/2 = 5°.
Ans = 150° + 5° = 155°.
1hr = 30°.
Therefore, 5 * 30 = 150°.
Tilting time = 10min.
1 min = 1/2°.
Therefore, 10/2 = 5°.
Ans = 150° + 5° = 155°.
Shreya raut said:
10 years ago
1 hr = 30° and 1 min = (1/2)°,
So , 5 hrs = 150 min and 10 min = 5°,
Thus 150 + 5 = 155°.
So , 5 hrs = 150 min and 10 min = 5°,
Thus 150 + 5 = 155°.
Bhadra said:
10 years ago
Thanks for your explanation @Shreya Raut.
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