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 9 of 27.
Nili said:
7 years ago
@All.
At first, we convert 10 hr into min i.e;
1hr=60min.
therefore,10hr=10*60=600min,and again,
10hr25min=600+25min=625min,
now, we convert min into hr again as the answer is in degrees,
therefore, 625/60hr=125/12hr.
At first, we convert 10 hr into min i.e;
1hr=60min.
therefore,10hr=10*60=600min,and again,
10hr25min=600+25min=625min,
now, we convert min into hr again as the answer is in degrees,
therefore, 625/60hr=125/12hr.
Hai said:
8 years ago
Guys, 10:25 us equal to 10 hours and 25 minutes.
When you convert 10 hours to minutes, it is 600 minutes,
So 600+25/60.
Then simplify the fraction by dividing to their GCF, which is 5.
So, (625/60) / 5 = 125/12.
When you convert 10 hours to minutes, it is 600 minutes,
So 600+25/60.
Then simplify the fraction by dividing to their GCF, which is 5.
So, (625/60) / 5 = 125/12.
Jagadeesh said:
1 decade ago
Actually they are 12 hours and we are caluculating 10.25.
So we will be taking directly asa 10+25/12. Because in a clock they will be only 12 hours and in the next step we are calculating for 25 min ie 25/60.
So we will be taking directly asa 10+25/12. Because in a clock they will be only 12 hours and in the next step we are calculating for 25 min ie 25/60.
Sumit said:
5 years ago
@All.
We have to give 10.25 min.
It means 10 hours 25 min.
We need to convert 25 min into hours.
That's, why I m going for 25 divides by 60 that converts into an hour and then we calculate.
Thanks, guys
We have to give 10.25 min.
It means 10 hours 25 min.
We need to convert 25 min into hours.
That's, why I m going for 25 divides by 60 that converts into an hour and then we calculate.
Thanks, guys
Suvo said:
9 years ago
Angle moved by hours hand in 25 min. Is (25/2) degree. So angle between hour hand and 12 position is 60-25/2 degree. And angle between 12 and min hand is 150 degree. So reflex angle 60-25/2 + 150 degree.
Bikash said:
1 decade ago
Hey guys.
Reflex angle is nothing but the exterior angle.i.e. you got to subtract your angle with 360.
Here:
Using the formula : 30*h-11/2*m
30*10-11/2*25=162.5.
Reflex angle = 360-162.5 = 197.5.
Reflex angle is nothing but the exterior angle.i.e. you got to subtract your angle with 360.
Here:
Using the formula : 30*h-11/2*m
30*10-11/2*25=162.5.
Reflex angle = 360-162.5 = 197.5.
Naresh said:
1 decade ago
We can easily solve this sum.
The hour hand covers 1/2 Degree per minute means for 25 minutes 25/2= 12/2 means 30-12 1/2= 17 1/2 Degrees.
1 Hour hand 6 hours = 180 degrees.
180 + 17.5 = 197.5.
The hour hand covers 1/2 Degree per minute means for 25 minutes 25/2= 12/2 means 30-12 1/2= 17 1/2 Degrees.
1 Hour hand 6 hours = 180 degrees.
180 + 17.5 = 197.5.
Mayur said:
1 decade ago
Simple solution.
At 10 o'clock angle between them = 300
for 25min displacement between them = 25*5.5 = 137.5
so, angle between them = 300-137.5 = 162.5
for reflex angle = 300-162.5 = 197.5
At 10 o'clock angle between them = 300
for 25min displacement between them = 25*5.5 = 137.5
so, angle between them = 300-137.5 = 162.5
for reflex angle = 300-162.5 = 197.5
Vikas Prajapati said:
7 years ago
First of all, To calculate ANGLE between a minute and second hands, Use Formula-
((60xHour)-(11xMinutes))÷2.
And then to calculate Reflex angle, Use Formula;
360° Actual Angle.
((60xHour)-(11xMinutes))÷2.
And then to calculate Reflex angle, Use Formula;
360° Actual Angle.
Mohana said:
9 years ago
We can use simple formula that,
Angle = 11%2 * min - (30 * hour).
ie) angle = 11%2 * 25 - (30 * 10).
So angle = 162.5.
To find the reflex angle, angle = 360 - 162.5.
= 197.5 degree.
Angle = 11%2 * min - (30 * hour).
ie) angle = 11%2 * 25 - (30 * 10).
So angle = 162.5.
To find the reflex angle, angle = 360 - 162.5.
= 197.5 degree.
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