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°
Answer: Option
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 1 of 5.

Mehboob said:   2 years ago
Convert 3hours into min.
60 * 3 = 180.
Then add 40min.
40+180 = 220.

Then 1 hour is equal to 30degre.
30 * 3 = 90.

Then subtract 220 - 90= 130 will be the answer.
(6)

Mehboob said:   2 years ago
11/2 * 40 - 30 * 3 = 220 - 90=130ans.
(2)

Aravind said:   4 years ago
This will bring 140.

The hour hand will be between 3 to 4.
The minute hand will be at 8 because of 40 min.
8-7
7-6
6-5
5-4.

Totally 4*30 =120 degree.
And
Then hour hand will be 40/2 20 degrees.
120 + 20.
=> 140°
(2)

Ziko said:   4 years ago
(11*minute-60*hour)/2
= (11*40-60*3)/2.
= 130.

Arina said:   5 years ago
11/2*40 = 220.
30*3 = 90.
220-90 = 130.

MOTIUR RAHMAN said:   6 years ago
°=11/2 min.-30H.
So,11*40/2-30*3,
°= 220-90,
= 130(answer).

Jitendra rathore said:   6 years ago
130° is right answer. I agree.

Shahid kureshi said:   7 years ago
3 hour is 30*3=90 and minute 40*5.5,
=220 and different is 220-90=130.

Bidur said:   7 years ago
@Dheeraj.

For angle between 11:20.
30*11-11/2*20=220 degree or (360-220=140degree for obtuse angle).

Sangavi said:   7 years ago
3:20.

Formula is((11/2)*M-30(H)).

Here H=3 and M=20.then substitute in formula.

((11/2)*20-30(3)).
((110-90))=20.

The angle in between an hour and minute is 20 degree.


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