# Aptitude - Clock - Discussion

Discussion Forum : Clock - General Questions (Q.No. 10)
10.
At 3:40, the hour hand and the minute hand of a clock form an angle of:
120°
125°
130°
135°
Explanation:

Angle traced by hour hand in 12 hrs. = 360°.

 Angle traced by it in 11 hrs = 360 x 11 ° = 110°. 3 12 3

Angle traced by minute hand in 60 min. = 360°.

 Angle traced by it in 40 min. = 360 x 40 ° = 240°. 60

Required angle (240 - 110)° = 130°.

Discussion:
43 comments Page 2 of 5.

Akhil Goud said:   7 years ago
30*3-11/2*20 = 20°.

Akhil Goud said:   7 years ago
Here, 30*3 - 11/2*20=20°.

Akhil Goud said:   7 years ago
@Vijay.

3hrs 20 minuts
By simple formula
(30*h-11/2)=angle
30*3-11/2*20= 20
.
.
The answer is 20°.

Dheeraj said:   7 years ago
What is the Angle for 11:20? Please.

Vijay said:   7 years ago
Can anyone tell me angle when it is 3:20?

AnonB said:   8 years ago
I think the answer should be less than 130 degrees.

Because, here minute hand is at "8" and hour hand is not exactly at "3". The hour hand is slightly shifted past "3". So, slightly reduction in degrees. But not exactly 130 degrees.

Am, I right?

Abi said:   8 years ago
How 11/3 hours?

Raghavi said:   8 years ago
The formula ((11 * min)/2) - 30hr is fine .

But in some cases, why are subtracting the answer from 360?

Gaurav said:   8 years ago
At 3:40,

Degree rotated by minute hand 6 deg/min = 40 * 6. ie: 240 deg.

Degree rotated by hour hand 0.5 deg/min = 0.5 * 40. ie: 20 deg + 90 deg (angle between hour hand 3 from 12).

Difference = 240 - (20+90) = 130 deg.

Vikas said:   9 years ago
Easy method to solve quickly.

40*11/2 = 220.

220-90 = 130.