Aptitude - Clock - Discussion
Discussion Forum : Clock - General Questions (Q.No. 2)
2.
The reflex angle between the hands of a clock at 10.25 is:
Answer: Option
Explanation:
| Angle traced by hour hand in | 125 | hrs = |  |
360 | x | 125 |  |
° | = 312 | 1 | ° | . |
| 12 | 12 | 12 | 2 |
| Angle traced by minute hand in 25 min = | |
360 | x 25 | |
° | = 150°. |
| 60 |
 Reflex angle = 360° - |
|
312 | 1 | - 150 | |
° | = 360° - 162 | 1 | ° | = 197 | 1° | . |
| 2 | 2 | 2 |
Discussion:
269 comments Page 14 of 27.
Priyanka said:
9 years ago
Simple calculation:
angle = (60H - 11M/2).
= 60 * 10 - 11 * 25/2.
= -162.5.
Now add it with 360.
360 + (-162.5).
197.5 -> Answer.
angle = (60H - 11M/2).
= 60 * 10 - 11 * 25/2.
= -162.5.
Now add it with 360.
360 + (-162.5).
197.5 -> Answer.
Siri said:
9 years ago
But By using that formulate the answer is 162.5, So the answer is not matched with the given options. So how to correct the answer?
Karthik said:
1 decade ago
This is simple way to find angle between the hands in a clock.
|30h- (11/2) m| where "h"indiacates hours and m indicates minutes.
|30h- (11/2) m| where "h"indiacates hours and m indicates minutes.
Mammu & shravs said:
1 decade ago
Formula for cal angle = 11/2*mins-30*hrs.
Therefore 11/2*25-30*10 = 137.5-300 = 163.5.
Reflex angle = 360-163.5 = 197.5 answer.
Therefore 11/2*25-30*10 = 137.5-300 = 163.5.
Reflex angle = 360-163.5 = 197.5 answer.
Aashwin said:
1 decade ago
@Shreekanth absolute genius man! You have helped me to present my presentation in class tomorrow. Its brilliant. Keep it up man.
Alex said:
1 decade ago
30H-(11/2)M where H----Hours
M----Minutes..
How do you use this formula to calculate the angle when the clock is showing 3:25?
M----Minutes..
How do you use this formula to calculate the angle when the clock is showing 3:25?
Mani said:
1 decade ago
@Jasna.
3'o clock means 3.00.
So, Hours - 3.
Minutes - 0.
Correct formula is 30h - 11/2m.
So, 30*3-11/2*0 = 90°.
3'o clock means 3.00.
So, Hours - 3.
Minutes - 0.
Correct formula is 30h - 11/2m.
So, 30*3-11/2*0 = 90°.
Shreekanth said:
1 decade ago
Hello friend... time into fraction
10hrs 25 min should be taken as
10+25/60 = 10+5/12 =(120+5)/12 = 125/12
Thats all.
10hrs 25 min should be taken as
10+25/60 = 10+5/12 =(120+5)/12 = 125/12
Thats all.
(4)
Arijit said:
1 decade ago
The formula to calculate the angle between the 2 hands is
(30 H - 11/2M)
Where H - the hour reading
M - the min reading
(30 H - 11/2M)
Where H - the hour reading
M - the min reading
Wasim said:
1 decade ago
Reflex angle is defined as the angle obtained when the angle between hour and minute hand is subtracted from 360 degree.
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