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 8 of 9.
Sabungar said:
6 years ago
The clock is started noon matlab 12 o clock.
15 min =90 degree,
1 hr =360 degree,
Clock is start 12 o clock to 5 o clock .
Min hand is 10.
10*0.5=5
=> 5 and 6 gap between the 30 degrees.
So,30 -5 =25
And180-25=155°.
15 min =90 degree,
1 hr =360 degree,
Clock is start 12 o clock to 5 o clock .
Min hand is 10.
10*0.5=5
=> 5 and 6 gap between the 30 degrees.
So,30 -5 =25
And180-25=155°.
Vaibhav said:
5 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°.
Vala Sailo Lal said:
5 years ago
Solution.
A clock is a circular shape and is 360°.
A clock is divided into 12 sections or 12 hrs.
Every sections or hour is 30°.
i.e 360°/12 = 30°.
So, 1 hr = 30°.
we get, 5hrs = 30°X5 = 150°.
1 min = ° ?
As 1hr = 30°.
1 min = (30°/ 60) =(1/2)= 0.5°.
So, 10 mins = 10 X 0.5° = 5°.
Then, 5 hrs 10 mins = 150°+5° = 155°.
A clock is a circular shape and is 360°.
A clock is divided into 12 sections or 12 hrs.
Every sections or hour is 30°.
i.e 360°/12 = 30°.
So, 1 hr = 30°.
we get, 5hrs = 30°X5 = 150°.
1 min = ° ?
As 1hr = 30°.
1 min = (30°/ 60) =(1/2)= 0.5°.
So, 10 mins = 10 X 0.5° = 5°.
Then, 5 hrs 10 mins = 150°+5° = 155°.
(2)
Priya said:
5 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)
Siddhant Bharti said:
5 years ago
12hr=360° so,
1hr=30°
Coming to Question
10 past 5 = 5:10.
Here, from 12 noon to 5 indicate= 5*30=150° This is the angle when Time is exactly 5 o'Clock but,
In this question, Time is 5:10. Now we need to calculate how much extra distance travelled by the hour hand in that 10 min.
Converting 10 min in Hours= 10/60 = 1/6.
The Angle travelled by the minute hand in 10 = 1/6*30= 5°.
So the total Angle= 150°+ 5° = 155°.
1hr=30°
Coming to Question
10 past 5 = 5:10.
Here, from 12 noon to 5 indicate= 5*30=150° This is the angle when Time is exactly 5 o'Clock but,
In this question, Time is 5:10. Now we need to calculate how much extra distance travelled by the hour hand in that 10 min.
Converting 10 min in Hours= 10/60 = 1/6.
The Angle travelled by the minute hand in 10 = 1/6*30= 5°.
So the total Angle= 150°+ 5° = 155°.
Charm said:
5 years ago
360/12*31/6=155.
How? Anyone please explain.
How? Anyone please explain.
Morpankh said:
5 years ago
For hour hand (HH), we have a notation. Right?
Morpankh said:
5 years ago
For hour hand(HH),we have a notation i.e., 360/12 and for min hand (MH) it's 360/60.
360/12=30° ---> 1.
Now,as given in the problem..
10 past 5 i.e, it's 5:00 and extra 10 min completed overall...
So, it's 5:00+00:10=5:10.
It's also written as..5+(10/60).
5+(1/6)..= 31/6---> 2eq.
Finally ,from 1eq & 2eq..
30° * 31/6 = 155°
360/12=30° ---> 1.
Now,as given in the problem..
10 past 5 i.e, it's 5:00 and extra 10 min completed overall...
So, it's 5:00+00:10=5:10.
It's also written as..5+(10/60).
5+(1/6)..= 31/6---> 2eq.
Finally ,from 1eq & 2eq..
30° * 31/6 = 155°
(7)
Anjana said:
4 years ago
12-5.10 = 5hr 10min
1hr=30 °.
5hr = 5 * 30=150
1min =1/2 °.
10min =10 * 1/2=5.
Ans) 150 + 5=155°.
1hr=30 °.
5hr = 5 * 30=150
1min =1/2 °.
10min =10 * 1/2=5.
Ans) 150 + 5=155°.
(10)
Ram Ghalley said:
4 years ago
5 :10
12hours =360°.
1 hour = 360/12
=30°.
5 hours= 5*30
=150°.
1 hour= 60mins
1 min =1/60 hour.
10 mins= 10*1/60.
= 1/6 hour.
= 30° * 1/6.
=5°.
Total angle moved by hour hand = 150° + 5°.
= 155°.
12hours =360°.
1 hour = 360/12
=30°.
5 hours= 5*30
=150°.
1 hour= 60mins
1 min =1/60 hour.
10 mins= 10*1/60.
= 1/6 hour.
= 30° * 1/6.
=5°.
Total angle moved by hour hand = 150° + 5°.
= 155°.
(15)
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