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:
90 comments Page 5 of 9.
Akhila t s said:
7 years ago
31/6 means the time is 5:10.
5 * 10/60 = 31/6,
1hr-30 minutes then,
31/6 * 30 = 155°
5 * 10/60 = 31/6,
1hr-30 minutes then,
31/6 * 30 = 155°
Aisha Raja said:
7 years ago
@Thongoc992.
It says at the START of noon which is 12 o'clock.
It says at the START of noon which is 12 o'clock.
Bhushan Gore said:
1 decade ago
Convert the hours into mins so, 12 * 60=720 mins = 360d.
5 * 60+10min = 310 mins =?.
720/60hrs = 12 = 360.
310/60hr = 31/6 = ?
360/12*31/6 = 155.
5 * 60+10min = 310 mins =?.
720/60hrs = 12 = 360.
310/60hr = 31/6 = ?
360/12*31/6 = 155.
Sabungar said:
7 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°.
Siddhant Bharti said:
6 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:
6 years ago
360/12*31/6=155.
How? Anyone please explain.
How? Anyone please explain.
Morpankh said:
6 years ago
For hour hand (HH), we have a notation. Right?
Navaneetha krishnan said:
1 decade ago
Sir i can't understand that 155 degree for which timing?
Santthosh said:
1 decade ago
I accept all of your comments, but what my doubt is if minute hand makes 5 ticks of 6 degree to contribute 5 minutes, then hour hand is making 6 ticks of 5 degree to contribute 1 hour. Why this variations in the ticks?
Yasin said:
1 decade ago
5.10?
hour hand moves 30 degree's for 1 hour
for 5 hours 5*30
in 10 min 10\60*30(in min)
150+5=155
hour hand moves 30 degree's for 1 hour
for 5 hours 5*30
in 10 min 10\60*30(in min)
150+5=155
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers