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 7 of 9.
Nitin harjai said:
1 decade ago
I don't understand "by 10min past 5".
Mariah said:
1 decade ago
What is the formula of changing minutes or hours to degrees?
Sandhya said:
2 decades ago
5.10/60
=5.2/12
=5.1/6
=5*6+1/6
=31/6
=5.2/12
=5.1/6
=5*6+1/6
=31/6
Pradeep said:
2 decades ago
@nilesh
1hr=30 degree
.'. 31/6 hr= 31/6 * 30 =155 deg
1hr=30 degree
.'. 31/6 hr= 31/6 * 30 =155 deg
Nilesh said:
2 decades ago
I cant undrstand how that
31/6 hrs= (360/12 * 31/6) = 155
31/6 hrs= (360/12 * 31/6) = 155
Pradeep Gorai said:
2 decades ago
To Uma
5 hr 1o min=310min(5*60+10)
=310/60 hr
=31/6 hr.
or
5 hr 10 min=5+10/60
=31/6
5 hr 1o min=310min(5*60+10)
=310/60 hr
=31/6 hr.
or
5 hr 10 min=5+10/60
=31/6
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.
Naveen said:
9 years ago
Angle between hands: 1/2(60H - 11M).
H : Hour.
M: Minutes.
Angle for the Minute hand : 6M.
Angle for the hour hand: 1/2(60H+M).
Reflex angle : 360- Angle.
So for this queestion:
Angle = 1/2(60(5) + (10)).
= 1/2 (310).
= 155.
H : Hour.
M: Minutes.
Angle for the Minute hand : 6M.
Angle for the hour hand: 1/2(60H+M).
Reflex angle : 360- Angle.
So for this queestion:
Angle = 1/2(60(5) + (10)).
= 1/2 (310).
= 155.
Ssrgsssdf said:
9 years ago
Why do we take it as 31/6 hours?
Meena said:
10 years ago
Why do we take it as 31/6 hrs?
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