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 5 of 7.
Harshad said:
1 decade ago
How do you know that at 7 the difference is 25min?
@ Nitesh: Assuming I don't have a watch to look at and count the minutes.
@ Nitesh: Assuming I don't have a watch to look at and count the minutes.
Joshua Thangliana said:
7 years ago
Degree= 30H - 5.5M.
straight line= 180 °
=> 180= 30*7 - 5.5M.
=> M= 60/11.
So, Answer= 7 hours 60/11 min.
straight line= 180 °
=> 180= 30*7 - 5.5M.
=> M= 60/11.
So, Answer= 7 hours 60/11 min.
(1)
Sonia said:
6 years ago
At 7:05 both hands of the clock make a straight line.
So by taking 5 minutes use formula (5*12/11), that's it.
So by taking 5 minutes use formula (5*12/11), that's it.
Rohit said:
6 years ago
The formula is 11/2min-30 hour.
Why are we reversing this formula in this question? Please tell me.
Why are we reversing this formula in this question? Please tell me.
(2)
Tejasri Samala said:
6 years ago
The simple formula to find is;
1. [(5h-30)*12/11] for h>6.
2. [(5h+30)*12/11]for h<6.
1. [(5h-30)*12/11] for h>6.
2. [(5h+30)*12/11]for h<6.
(4)
Shaik shareef said:
1 decade ago
Can anyone give brief explanation of 5*5/11min how this get?
I want simplification.
I want simplification.
Sushma R said:
8 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.
Arika said:
8 years ago
Please solve how to find between 8 &9 o'clock as the same process?
Nanthakumar said:
2 years ago
Simple method.
55 = 60.
Then 5 = x.
55x= 300.
x=300/55.
x= 5 5/11.
55 = 60.
Then 5 = x.
55x= 300.
x=300/55.
x= 5 5/11.
(5)
Bhushan suriya said:
7 years ago
(210-6a)+(30/60)a = 180.
I think this will be the perfect solution.
I think this will be the perfect solution.
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