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 5 of 9.
Meena said:
10 years ago
Why do we take it as 31/6 hrs?
Ssrgsssdf said:
9 years ago
Why do we take it as 31/6 hours?
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.
Rahu said:
9 years ago
@Naveed Mohammad.
Thanks for providing those formulas.
Thanks for providing those formulas.
Ajay kumar aluvala said:
9 years ago
5:10 = 5+(10/60) = 5+1/6 = 31/6 hrs.
1 hr = 30 degrees,
31/6 hrs = 31/6 * 30 = 155 degrees.
1 hr = 30 degrees,
31/6 hrs = 31/6 * 30 = 155 degrees.
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.
Riya shah said:
9 years ago
Also, apply the formula;
Q = 30H + 1/2M.
Put the value of Hour and minutes.
30 * 10 + 1/2 *5,
= 155.
Q = 30H + 1/2M.
Put the value of Hour and minutes.
30 * 10 + 1/2 *5,
= 155.
(1)
Soundarya said:
9 years ago
5 min past 10.
Number of hours = 5.
Degrees rotated in 1 hour or 60= 30deg.
Degrees rotated in 5 hours = 150deg.
Degree rotated in 10 min = (30/6) =5.
Degrees rotated in 10 min past 5 = 155deg.
Number of hours = 5.
Degrees rotated in 1 hour or 60= 30deg.
Degrees rotated in 5 hours = 150deg.
Degree rotated in 10 min = (30/6) =5.
Degrees rotated in 10 min past 5 = 155deg.
Sowmya said:
9 years ago
12pm to 5pm = 5hrs.
1hr = 30°.
Therefore, 5 * 30 = 150°.
Tilting time = 10min.
1 min = 1/2°.
Therefore, 10/2 = 5°.
Ans = 150° + 5° = 155°.
1hr = 30°.
Therefore, 5 * 30 = 150°.
Tilting time = 10min.
1 min = 1/2°.
Therefore, 10/2 = 5°.
Ans = 150° + 5° = 155°.
Shreya raut said:
9 years ago
1 hr = 30° and 1 min = (1/2)°,
So , 5 hrs = 150 min and 10 min = 5°,
Thus 150 + 5 = 155°.
So , 5 hrs = 150 min and 10 min = 5°,
Thus 150 + 5 = 155°.
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