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.
Bhushan Gore said:
9 years 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.
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°.
Veeeateja said:
8 years ago
1 hour it takes 30 degree, 5:10, 5*30=150, 1 miniute =1/2.
10 miniutes =5, total =150=5=150.
10 miniutes =5, total =150=5=150.
Renoop said:
7 years ago
(30*hr+11/2*min)-360.
(30*5+11/2*10)-360=155.
(30*5+11/2*10)-360=155.
Anil said:
7 years ago
5 hours + 10 minutes.
5*30°+ 10*0.5° {Angle made by hour hand in 1 hour =30°, the angle made by hour hand in 1 min=0.5°}
150°+5°
155°.
5*30°+ 10*0.5° {Angle made by hour hand in 1 hour =30°, the angle made by hour hand in 1 min=0.5°}
150°+5°
155°.
Kailash patria said:
7 years ago
Hour hand completed 150 (90+60) upto 5 o'clock.
Now, for more 10 minutes past hour hand will move 5° (30° in 60 minutes multiplied by 10 (i.e. 1/2 degree per minute).
Hence total movement 150+5=155.
Now, for more 10 minutes past hour hand will move 5° (30° in 60 minutes multiplied by 10 (i.e. 1/2 degree per minute).
Hence total movement 150+5=155.
Phaneendra said:
7 years ago
10 min past to 5 means time is 4:50.
Ravikiran said:
7 years ago
1hr=30degrees.
Therefore 5hr and 10min=5*30=150=X.
=10min=5degree=Y,
Z=X+Y,
Z=150+5,
Z=155 degree.
Therefore 5hr and 10min=5*30=150=X.
=10min=5degree=Y,
Z=X+Y,
Z=150+5,
Z=155 degree.
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:
6 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.
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