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:
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.
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.
(9)
Mehboob said:
2 years ago
11/2 * 40 - 30 * 3 = 220 - 90=130ans.
(2)
Yuga said:
1 decade ago
Angle traced in 12 hours = 360 degrees.
Hence for, 3 hours and 40 minutes.
Convert 3 hours into minutes 3 hours* 60 minutes = 180 minutes.
Now, just add 40 minutes with 180 minutes total of 220 minutes.
Now divide 220/60 = 11/3.
Hence for, 3 hours and 40 minutes.
Convert 3 hours into minutes 3 hours* 60 minutes = 180 minutes.
Now, just add 40 minutes with 180 minutes total of 220 minutes.
Now divide 220/60 = 11/3.
(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°
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)
Arina said:
5 years ago
11/2*40 = 220.
30*3 = 90.
220-90 = 130.
30*3 = 90.
220-90 = 130.
(1)
Akhil Goud said:
7 years ago
30*3-11/2*20 = 20°.
Vikas said:
9 years ago
Easy method to solve quickly.
40*11/2 = 220.
220-90 = 130.
40*11/2 = 220.
220-90 = 130.
Gaurav said:
9 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.
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.
Raghavi said:
8 years ago
The formula ((11 * min)/2) - 30hr is fine .
But in some cases, why are subtracting the answer from 360?
But in some cases, why are subtracting the answer from 360?
Abi said:
8 years ago
How 11/3 hours?
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