Aptitude - Clock - Discussion
Discussion Forum : Clock - General Questions (Q.No. 12)
12.
The angle between the minute hand and the hour hand of a clock when the time is 8.30, is:
Answer: Option
Explanation:
| Angle traced by hour hand in | 17 | hrs = |  |
360 | x | 17 |  |
° | = 255°. |
| 2 | 12 | 2 |
| Angle traced by min. hand in 30 min. = | |
360 | x 30 | |
° | = 180°. |
| 60 |
Required angle = (255 - 180)° = 75°.
Discussion:
42 comments Page 1 of 5.
Nisar said:
12 months ago
How 17/2 came? Explain, please.
(1)
Simran Dhaliwal said:
2 years ago
8:30.
By formula:
Hr-8, min -30.
angle-(11/2) * min-30*hr.
Angle=(11/2) * 30-30*8=165-240=-75.
By formula:
Hr-8, min -30.
angle-(11/2) * min-30*hr.
Angle=(11/2) * 30-30*8=165-240=-75.
(1)
Durga Prasad ullingi said:
2 years ago
6:30 + 2:00
20/2 + 2 * 30 = (15+60) = 75.
20/2 + 2 * 30 = (15+60) = 75.
Manisha said:
3 years ago
Can anyone explain, how the angle traced by hour hand is 360/12 and angle traced by minute hand is 360/60?
Ravi Sharma said:
4 years ago
We can use this formula for this type of questions.
Angle= 30H - (11/2)*M.
Where H is hour and M is minute.
So, 30*8- (11/2)*30 = 75 ans.
Note: If the answer is minus then ignore minus or reverse this formula.
Angle= 30H - (11/2)*M.
Where H is hour and M is minute.
So, 30*8- (11/2)*30 = 75 ans.
Note: If the answer is minus then ignore minus or reverse this formula.
(1)
Dibyaranjan sahoo said:
4 years ago
30 * 8 - 11/2 * 30,
240-165.
= 75.
240-165.
= 75.
(1)
Spartan said:
4 years ago
Here we have to find angle b/w 8.30.
The speed of minute hand= 6.
The speed of hour hand = 0.5.
The distance b/w each no is =30 i.e, 360%12 = 30;.
Sol : Hour hand: 8*30 = 240.
And 30*0.5 = 15.
Minute Hand
30*6 = 180.
255 - 180 = 75.
The speed of minute hand= 6.
The speed of hour hand = 0.5.
The distance b/w each no is =30 i.e, 360%12 = 30;.
Sol : Hour hand: 8*30 = 240.
And 30*0.5 = 15.
Minute Hand
30*6 = 180.
255 - 180 = 75.
Anomiee said:
4 years ago
@Asinha.
8.30 hrs = 8hrs+30mins.
= ( 8+(30/60) )mins.
= (8+1/2)mins= 17/2 minutes.
8.30 hrs = 8hrs+30mins.
= ( 8+(30/60) )mins.
= (8+1/2)mins= 17/2 minutes.
ASinha said:
5 years ago
How to calculate angle in 8:35?
Could anyone help me out?
Could anyone help me out?
Ace said:
5 years ago
It is very easy new method.
In 1 minute your hand covers 1/2° while minute hand 6°.
Multiply 30 (1/2) for degree covered by your hand =15°.
And 10 min (6°) for degree by minute hand=60°.
Just add them 60+15=75°.
Any doubts.
In 1 minute your hand covers 1/2° while minute hand 6°.
Multiply 30 (1/2) for degree covered by your hand =15°.
And 10 min (6°) for degree by minute hand=60°.
Just add them 60+15=75°.
Any doubts.
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