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.
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.
Suhana said:
7 years ago
Hello everyone.
min=10 past=5 it means,
10 hours 5 min,
so, 10+5/60 = 31/6,
Therefore, hour hand = (360/12 * 31/6) = 155 Ans.
min=10 past=5 it means,
10 hours 5 min,
so, 10+5/60 = 31/6,
Therefore, hour hand = (360/12 * 31/6) = 155 Ans.
(1)
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.
Madhav reddy said:
6 years ago
Angle = 30H-11/2Min.
Therefore for 5:10 ANGLE IS 30 * 5-11/2 * 10 = 150-55 = 95 degrees.
This is the correct answer.
Therefore for 5:10 ANGLE IS 30 * 5-11/2 * 10 = 150-55 = 95 degrees.
This is the correct answer.
(4)
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