Aptitude - Clock - Discussion
Discussion Forum : Clock - General Questions (Q.No. 6)
6.
At what time between 7 and 8 o'clock will the hands of a clock be in the same straight line but, not together?
Answer: Option
Explanation:
When the hands of the clock are in the same straight line but not together, they are 30 minute spaces apart.
At 7 o'clock, they are 25 min. spaces apart.
Minute hand will have to gain only 5 min. spaces.
55 min. spaces are gained in 60 min.
| 5 min. spaces are gained in |  |
60 | x 5 |  min |
= 5 | 5 | min. |
| 55 | 11 |
| Required time = 5 |
5 | min. past 7. |
| 11 |
Discussion:
70 comments Page 3 of 7.
Arika said:
7 years ago
Please solve how to find between 8 &9 o'clock as the same process?
Sushma R said:
7 years ago
A=30H-5.5M.
Where A=180',
H=7,
Now,
180=30*7-5.5M,
30=5.5M,
M=300/55,
M=5*5/11.
Where A=180',
H=7,
Now,
180=30*7-5.5M,
30=5.5M,
M=300/55,
M=5*5/11.
Shubham satpathy said:
7 years ago
Trick is 60/11 *( time +or - 6).
So between 7 to 8. Time is smaller one is.7 now here 7 is big than 6 so formula become 60/11 * (7-6) which is the answer.
So between 7 to 8. Time is smaller one is.7 now here 7 is big than 6 so formula become 60/11 * (7-6) which is the answer.
Jaanu said:
7 years ago
Use this formula to find angle :
Angle=((11/2)*minutes )-30* hour.
Between 7 and 8 means that the time would be something around 7. So consider 7 hours and x minutes.
180 = (11* x )/2 - 30 * 7.
210 - 180 = 11*x /2.
30 = 11*x /2.
30*2 = 11x,
60 = 11x,
X = 5.5/11.
That is 7 hours and 5 5/11 min.
Angle=((11/2)*minutes )-30* hour.
Between 7 and 8 means that the time would be something around 7. So consider 7 hours and x minutes.
180 = (11* x )/2 - 30 * 7.
210 - 180 = 11*x /2.
30 = 11*x /2.
30*2 = 11x,
60 = 11x,
X = 5.5/11.
That is 7 hours and 5 5/11 min.
G Nagesh said:
8 years ago
How is come 5*5/11?
Please explain anyone.
Please explain anyone.
Shanur Rahman said:
8 years ago
@Sharmistha.
Minute hand gains 55 minutes on the hour hand.
Minute hand gains 55 minutes on the hour hand.
Hrushi said:
8 years ago
How 5*5/11 come?
Please explain.
Please explain.
NAVI said:
8 years ago
I didn't understand the question. Can anyone help me?
Rintu said:
8 years ago
To from 180d between 7:0 to 8:0, the minute hand has to gain (35 - 30) = 5 min space.
As in 1 min =12/11 min gain.
Therfore in 5 min=12/11 * 5 = 5 * 5/11 min.
As in 1 min =12/11 min gain.
Therfore in 5 min=12/11 * 5 = 5 * 5/11 min.
Shiv said:
9 years ago
Thanks for your solution @Shekhar.
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