Aptitude - Clock - Discussion
Discussion Forum : Clock - General Questions (Q.No. 9)
9.
At what angle the hands of a clock are inclined at 15 minutes past 5?
Answer: Option
Explanation:
| Angle traced by hour hand in | 21 | hrs = |  |
360 | x | 21 |  |
° | = | 157 | 1 | ° |
| 4 | 12 | 4 | 2 |
| Angle traced by min. hand in 15 min. = | |
360 | x 15 | |
° | = 90°. |
| 60 |
 Required angle = |
|
157 | 1 | |
° | - 90° = 67 | 1 | ° |
| 2 | 2 |
Discussion:
41 comments Page 2 of 5.
Rameez said:
1 decade ago
Please explain this to me.
Considering total as 360 degreee. And there are 12 segments. So each segment will have 30 degree.
As there are 2 segments between 3 and 5 so 2x30= 60.
So why 67.5?
Considering total as 360 degreee. And there are 12 segments. So each segment will have 30 degree.
As there are 2 segments between 3 and 5 so 2x30= 60.
So why 67.5?
Ibrahim Payak said:
5 years ago
Simply put this eq:
∠ = |60H-11M/2|.
= |60*5-11*15/2|,
= |300-165/2|,
= |135/2|,
= 67.5.
∠ = |60H-11M/2|.
= |60*5-11*15/2|,
= |300-165/2|,
= |135/2|,
= 67.5.
Srinitha said:
1 year ago
Use formula( d × 30 + min/2).
D = distance b/w 5 and 15 minutes = 2,
= 2 × 30 + 15/2.
= 60+7 1/2.
= 67 1/2.
D = distance b/w 5 and 15 minutes = 2,
= 2 × 30 + 15/2.
= 60+7 1/2.
= 67 1/2.
(3)
Pramod Patil said:
9 years ago
Here We have to find angle between 5:15.
For 5 hours = 5 * 30 = 150,
for 15 min = 15 * 5.5 = 82.5,
Therefore 150 - 82.5 = 67.5.
For 5 hours = 5 * 30 = 150,
for 15 min = 15 * 5.5 = 82.5,
Therefore 150 - 82.5 = 67.5.
Soumitra lohar said:
1 decade ago
Theta = 1/2(60*h-11*m) (formula).
Where h = hour and m = minute.
5.15 = 1/2(60*5-11*15).
= 1/2(300-165).
= 67.5.
Where h = hour and m = minute.
5.15 = 1/2(60*5-11*15).
= 1/2(300-165).
= 67.5.
Radhika said:
1 decade ago
Using formula to calculate angle i.e. 1/2(60*h-11*m) where h is hour time and m is minute, angle can easily be calculated.
Alekhya said:
4 years ago
Just put the formula :
θ = abs | 30*(H) - 11/2* (M)|.
= 30*5 - 5.5 * 15,
= 67.5°.
θ = abs | 30*(H) - 11/2* (M)|.
= 30*5 - 5.5 * 15,
= 67.5°.
(4)
Dharani said:
9 years ago
@Neha.
How can you multiply 150 degree in place of 5? By formula its wrong.
Please explain that.
How can you multiply 150 degree in place of 5? By formula its wrong.
Please explain that.
Tashu said:
1 decade ago
@Sagar.
If 5+15/60, then why again 15 minutes is considered separately and solved in the answer?
If 5+15/60, then why again 15 minutes is considered separately and solved in the answer?
Rajiv said:
1 decade ago
Please explain how we are getting 21/4
If 15 min is 4th part of 60 min.
then how 21 comes.
If 15 min is 4th part of 60 min.
then how 21 comes.
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