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 7 of 8.

Aadityan said:   8 years ago
Thanks @Reddilavan.

Mukram Khan said:   8 years ago
When the time in watch 01:30 what is the angle of needles?

Can anyone solve this?

Rahul gupta said:   8 years ago
For 4:20.

Basic formula and h and m indicate hours and mint.

(H-m÷5)*30-(m÷2).

Shakir said:   7 years ago
12 hr = 360°.
1 hr = 30°.
1 min = 1/2°.
20 min = 1*20/2 = 10°.

Ravi singh said:   7 years ago
Formula :-
M=2/11(t1*30+-°)
°=Angle.

Solution-
20=2/11(4*30+-°)
10*11=|120+-°|,
110-120=°,
10°= ans.

SIVAKRISHNA said:   7 years ago
@Anil

|11M-60H|/2 formula. This formula is not sufficient for some problems.

For example; can you find an angle between the minute hand and hour hand of a clock when the time is 3:40?

Solution:

|11*40-60*3|/2.
=440-180/2.
=360/2.
=180°.

Md Shahrukh Alam said:   7 years ago
|60 * 4-11 * 20|/2.
240-220/2,
20/2.

Anuranan said:   7 years ago
It very simple.

1 Hour cover =30 °
So, 60 minutes cover 30 °.
1 minutes cover 30/60 -_1/2 °.
20 minutes cover 20 (1/2) °.
Equal to 10 °.
(2)

Ansh Shukla said:   6 years ago
How 1-hour cover 30°?

Can anyone clear this? please!
(1)

Aditi pawar said:   5 years ago
12 hour covers 360 degrees.
Then 360/12 = 30 degrees.
That is one hour.


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