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:
10°
20°
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 4 of 8.

Netsi said:   10 years ago
@4:20 is the hour hand @4? It moves a little towards 5.

Premsai said:   10 years ago
Any another method?

Premsai said:   10 years ago
I am not able to understand.
(1)

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?

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.

Sandhu said:   1 decade ago
Please tell me how makes formula 11m -60H/2?

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 :-).

M Rajeswari said:   1 decade ago
It is correct 11/2(20)-30(4) = 110-120 = 10.

Greeshma said:   1 decade ago
I think the formula you given (11M-60H)/2 is wrong, It is not coming can you explain it? For example the angle between the two hands at 6:00 it is giving wrong answer.

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.


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