Aptitude - Clock - Discussion
Discussion Forum : Clock - General Questions (Q.No. 8)
8.
The angle between the minute hand and the hour hand of a clock when the time is 4.20, is:
Answer: Option
Explanation:
| Angle traced by hour hand in | 13 | hrs = |  |
360 | x | 13 |  |
° | = 130°. |
| 3 | 12 | 3 |
| Angle traced by min. hand in 20 min. = | |
360 | x 20 | |
° | = 120°. |
| 60 |
Required angle = (130 - 120)° = 10°.
Discussion:
79 comments Page 2 of 8.
Nitin said:
1 decade ago
By common sense it is clear that in 20 minutes the minute hand will move 20*6=120degree and the hour hand will move20*(1/2)=10degree.
Clearly min hand will be at 20 and hour hand will be 10degree apart.
Clearly min hand will be at 20 and hour hand will be 10degree apart.
(1)
Shashank said:
1 decade ago
@Greeshma.
Angle between 2 hands at 6:00.
MIN (M) = 0.
HOUR (H) = 6.
Formula is (|11M-60H|) /2.
So, {|11(0)-60(6)|}/2 = 180.
That's it :-).
Angle between 2 hands at 6:00.
MIN (M) = 0.
HOUR (H) = 6.
Formula is (|11M-60H|) /2.
So, {|11(0)-60(6)|}/2 = 180.
That's it :-).
Junaid said:
1 decade ago
Its so simple guys.
Total 360 degrees.
Total clock = 12 hours.
360/12 = 30 degrees.
Now 1 hour = 30 degrees.
1 hour = 60 minutes.
So 30/60 = 0.5 Degrees.
Now 1 minute = 0.5 Degrees.
Just multiply Degree*Minutes.
= 0.5*20 = 10 Degree.
Total 360 degrees.
Total clock = 12 hours.
360/12 = 30 degrees.
Now 1 hour = 30 degrees.
1 hour = 60 minutes.
So 30/60 = 0.5 Degrees.
Now 1 minute = 0.5 Degrees.
Just multiply Degree*Minutes.
= 0.5*20 = 10 Degree.
Sandhu said:
1 decade ago
Please tell me how makes formula 11m -60H/2?
M Rajeswari said:
1 decade ago
It is correct 11/2(20)-30(4) = 110-120 = 10.
SANKET RANJANE said:
10 years ago
Its simple. Just remember for hour hand it covers 0.5 degree in one minute. And minute hand covers 6 degrees.
Rahul said:
10 years ago
What do we do if we have a reverse question?
At what time between 3 and 4 clock will there be 36 degree?
At what time between 3 and 4 clock will there be 36 degree?
Premsai said:
10 years ago
Any another method?
Satya prakash singh said:
10 years ago
This formula does not provide solution for all problems.
Ex. 11:43.
= 60*11 - 11*43/2.
= 187/2 = 93.5.
Which is not appropriate angle.
Ex. 11:43.
= 60*11 - 11*43/2.
= 187/2 = 93.5.
Which is not appropriate angle.
Netsi said:
10 years ago
@4:20 is the hour hand @4? It moves a little towards 5.
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