# 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°
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:
77 comments Page 2 of 8.

Md Shahrukh Alam said:   5 years ago
|60 * 4-11 * 20|/2.
240-220/2,
20/2.

SIVAKRISHNA said:   6 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°.

Ravi singh said:   6 years ago
Formula :-
M=2/11(t1*30+-°)
°=Angle.

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

Shakir said:   6 years ago
12 hr = 360°.
1 hr = 30°.
1 min = 1/2°.
20 min = 1*20/2 = 10°.

Rahul gupta said:   7 years ago
For 4:20.

Basic formula and h and m indicate hours and mint.

(H-m÷5)*30-(m÷2).

Mukram Khan said:   7 years ago
When the time in watch 01:30 what is the angle of needles?

Can anyone solve this?

Thanks @Reddilavan.

RAHUL R. PARSODKAR said:   7 years ago
SIMPLE FORMULA.

30*H - (11/2)*M
Where, 'H' FOR 'HOUR'; 'M' FOR 'MINUTE'.
Answer will generated in degree angle.

Note:- Suppose, answer of angle is greater than 180 degrees then answer will be reduced or minus (- 360) from original angle for example
1) 3:40 hr.

According to formula,
30*3 - (11/2)*40.
= 90-220
= -130
= 130 degree (and take it +Ve).

Rohit said:   7 years ago
11/2m-30hr formula is correct for every angle. And another thing ANGLE IN CLOCKWISE DIRECTION IS NEGATIVE.

Mihir said:   7 years ago
Good job @Karan Bajaj.