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:
80 comments Page 3 of 8.

Premsai said:   1 decade ago
Any another method?

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

Satya prakash singh said:   1 decade 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.

Netsi said:   1 decade ago
@4:20 is the hour hand @4? It moves a little towards 5.

Rajkumar said:   1 decade ago
What angle will form at 10 clock. Please explain?

Mukesh kumar said:   1 decade ago
@Rajkumar.

It should be 60 degree.

Aniil maurrya said:   1 decade ago
The perfect formula is 1/2|(60H - 11M)|.

Gaurav kashyap said:   10 years ago
Apply simple formula |11/2 * min - 30 * hr|.

B Mallesh said:   10 years ago
In explanation, why 360/12 and 360/60 are taken?

Punithavathi said:   10 years ago
The shortcut formula to find angle b/w two hands.

1/2[60H - 11M] where H is hour, M min.

If result is above 180 then subtract the answer from 360.


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