Aptitude - Clock - Discussion
Discussion Forum : Clock - General Questions (Q.No. 3)
3.
A clock is started at noon. By 10 minutes past 5, the hour hand has turned through:
Answer: Option
Explanation:
Angle traced by hour hand in 12 hrs = 360°.
| Angle traced by hour hand in 5 hrs 10 min. i.e., | 31 | hrs = |  |
360 | x | 31 |  |
° | = 155°. |
| 6 | 12 | 6 |
Discussion:
90 comments Page 3 of 9.
Yash said:
9 years ago
It is too much simple.do not complicate it.
Just convert hours into minutes..so, we can say.
12 hours = 360°.
Convert 12 hours into minutes= 720 minutes,
and 5 hours and 10 minutes= 310 minutes,
So simple formula fir that is;
720 minutes = 360°
310 minues = (?).
So,
Cross multiply it and then divide.
(310 * 360)/720.
It become 111,600/720= 155°.
Just convert hours into minutes..so, we can say.
12 hours = 360°.
Convert 12 hours into minutes= 720 minutes,
and 5 hours and 10 minutes= 310 minutes,
So simple formula fir that is;
720 minutes = 360°
310 minues = (?).
So,
Cross multiply it and then divide.
(310 * 360)/720.
It become 111,600/720= 155°.
(1)
Vaibhav said:
6 years ago
Hr hand move 10 min in 5 hrs so afternoon means start from 12 then after 5 hrs show 5 o'clock but 10 min means 10/2=5° so 12 to 5 150°+5°=155°.
(1)
Priya said:
6 years ago
1hrs=30°
So 5 hrs 10min =(5+1/6)*30°. i.e
1hrs = 60min
1min =1/6
10min = 10/60 = 1/6
= (31/6)*30.
= 155°.
So 5 hrs 10min =(5+1/6)*30°. i.e
1hrs = 60min
1min =1/6
10min = 10/60 = 1/6
= (31/6)*30.
= 155°.
(1)
Sasidhar said:
1 decade ago
Here angle In 12h is = 360 degree
angle in 10 PAST 5 means 5:10
h=5, m=10
Now
|30h-11/2m|= degree
|30*5-11/2*10| = 95 degree
Now degree=360-95=155 degree. Got it friends?
angle in 10 PAST 5 means 5:10
h=5, m=10
Now
|30h-11/2m|= degree
|30*5-11/2*10| = 95 degree
Now degree=360-95=155 degree. Got it friends?
(1)
Uma said:
2 decades ago
I can't understand how that 31/6 come?
(1)
Shreya raut said:
10 years ago
1 hr = 30° and 1 min = (1/2)°,
So , 5 hrs = 150 min and 10 min = 5°,
Thus 150 + 5 = 155°.
So , 5 hrs = 150 min and 10 min = 5°,
Thus 150 + 5 = 155°.
Bhadra said:
10 years ago
Thanks for your explanation @Shreya Raut.
Mehak said:
10 years ago
How 31/6?
Still can't understand.
Still can't understand.
Mohan said:
10 years ago
How 31/6 will come? Please explain me.
Vinoth said:
10 years ago
Best explanation, thanks @Shreya Raut.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers