Aptitude - Clock - Discussion
Discussion Forum : Clock - General Questions (Q.No. 14)
14.
At what time between 4 and 5 o'clock will the hands of a watch point in opposite directions?
Answer: Option
Explanation:
At 4 o'clock, the hands of the watch are 20 min. spaces apart.
To be in opposite directions, they must be 30 min. spaces apart.
Minute hand will have to gain 50 min. spaces.
55 min. spaces are gained in 60 min.
| 50 min. spaces are gained in |  |
60 | x 50 |  min. or 54 |
6 | min. |
| 55 | 11 |
| Required time = 54 |
6 | min. past 4. |
| 11 |
Discussion:
56 comments Page 3 of 6.
Owen Wilson said:
9 years ago
What does it mean when it says "55 min. spaces are gained"?
Raju said:
1 decade ago
How 4 past come after dividing?
Ajay Kumar said:
9 years ago
You explained very well. Thanks @Kiran.
Nikita Agrawal said:
8 years ago
Somebody, please tell me the degrees of every direction.
Ash said:
8 years ago
Guys when to use (4h-11/2 *m) and when to use (11/2*m-4h). Can anybody please explain this?
Avijit Samanta said:
7 years ago
Use this formula:
(5n+30)*12/11 if n<6.
(5n-30)*12/11 if n>6.
(5n+30)*12/11 if n<6.
(5n-30)*12/11 if n>6.
Rinju said:
7 years ago
The two hands of a clock will be opposite direction between H and ( H+1) O' clock at 60a/11 minutes past H' O clock.
Solve this problem by using this method,
'a' is opposite to H,
In this case, H is 4 and a is 10,
Then 60*10/11,
600/11= 54 6/11 past 4.
Solve this problem by using this method,
'a' is opposite to H,
In this case, H is 4 and a is 10,
Then 60*10/11,
600/11= 54 6/11 past 4.
Arunkumar said:
7 years ago
Thanks @Nithisha.
Hemangi said:
3 weeks ago
First, opposite direction only in the case of 180 degrees.
1 hour = 1 time on,
12 hours =22 (5-7 common ) before 5, add 6 and after 5 sub 6.
Here 4,
So 4+6 = 10.
10 × 11/2 × 30 = 60/11,
= 54 6/11.
1 hour = 1 time on,
12 hours =22 (5-7 common ) before 5, add 6 and after 5 sub 6.
Here 4,
So 4+6 = 10.
10 × 11/2 × 30 = 60/11,
= 54 6/11.
Pasumarthy said:
1 decade ago
@xyz, @abc let's say initially both are at 12, after 60 min hours is at 1 and minutes hand at 12. So, in 60 min they traveled 55 min spaces apart.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers