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 | ![]() |
= 5 | 5 | min. |
55 | 11 |
![]() |
5 | min. past 7. |
11 |
Discussion:
70 comments Page 2 of 7.
Dara. Sai Madhukar said:
5 years ago
This question is solved by using formula.
A=30*HOUR -5.5*MINUTES.
Here we aer going to take A =180 degrees (straight line).
180=30*7-5.5*M.
M is minutes.
A=30*HOUR -5.5*MINUTES.
Here we aer going to take A =180 degrees (straight line).
180=30*7-5.5*M.
M is minutes.
(1)
Sonia said:
5 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.
Tejasri Samala said:
5 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)
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)
Bombiyah said:
6 years ago
The angle formed from 12 o'clock to 7 o'clock is 210°.
Use this formula:
2/11 (angle formed (+) or (-) 180°)
Add 180 when the clock hands coincide, subtract when they are not.
Since, not coincide subtract it,
=2/11(210 * 180°)
= 60/11 or 5 5/11.
Use this formula:
2/11 (angle formed (+) or (-) 180°)
Add 180 when the clock hands coincide, subtract when they are not.
Since, not coincide subtract it,
=2/11(210 * 180°)
= 60/11 or 5 5/11.
(1)
Joshua Thangliana said:
6 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)
Tehsin said:
6 years ago
I couldn't get it how 55 min required to gain 60 min spaces. I mean they are min spaces so why not 60 min spaces be in 60 min? please someone explain!
(1)
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.
John said:
7 years ago
@Vivek Jain.
In 1 hr minute, min hand covers 60 min and hr hand covers 5 min. Comparing both minute hand gains 55 min in 1 hr.
In 1 hr minute, min hand covers 60 min and hr hand covers 5 min. Comparing both minute hand gains 55 min in 1 hr.
Hir@nm@y said:
7 years ago
At first you multiple 1st hours by 5 (7*5=35),
Then you substitute 30 from the multiple values, (35-30=5),
That's the answer.
5* 5/11 [by rules of (x* x/11)].
That's answer will 7: 5* 5/11
Then you substitute 30 from the multiple values, (35-30=5),
That's the answer.
5* 5/11 [by rules of (x* x/11)].
That's answer will 7: 5* 5/11
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