Aptitude - Clock - Discussion
Discussion Forum : Clock - General Questions (Q.No. 15)
15.
At what time between 9 and 10 o'clock will the hands of a watch be together?
Answer: Option
Explanation:
To be together between 9 and 10 o'clock, the minute hand has to gain 45 min. spaces.
55 min. spaces gained in 60 min.
| 45 min. spaces are gained in |  |
60 | x 45 |  min or 49 |
1 | min. |
| 55 | 11 |
 The hands are together at 49 |
1 | min. past 9. |
| 11 |
Discussion:
48 comments Page 3 of 5.
Bhavesh Kirange said:
1 decade ago
I don't understand the concept here you are assuming. In question from 9 to 10 o'clock the hands should be meet each other on 9.50 o'clock in real situation by watch.
But how could you say here they are meeting on 9.45 o'clock means we are suppose to assume hour hand at stable position?
But how could you say here they are meeting on 9.45 o'clock means we are suppose to assume hour hand at stable position?
Jeet said:
1 decade ago
In Q6 at 7, they are 25 mins apart, but in this Q at 9 they are 45 mins apart, is the angle measured clockwise/ anti clockwise?
Sonam said:
1 decade ago
When asking will the hands of a watch be together?
Use (60/11)h.
= 60*9/11.
= 540/11.
= 49 1/11.
Use (60/11)h.
= 60*9/11.
= 540/11.
= 49 1/11.
Smita said:
1 decade ago
Past 9n means?
Abhishek said:
1 decade ago
@Kapil.
Awesome man done in the most basic way manner as possible. Really appreciate your work.
Awesome man done in the most basic way manner as possible. Really appreciate your work.
Nivesh said:
1 decade ago
Thanks Kapil you have explained it in a very basic manner.
Yamini said:
2 decades ago
Why you take the 55 min spaces ?
Krish said:
2 decades ago
Sakshi,
The question is between 9 and 10 both the hands must coincide,.
So for the minute hand to reach 9 it has to gain 45 minute spaces.
The question is between 9 and 10 both the hands must coincide,.
So for the minute hand to reach 9 it has to gain 45 minute spaces.
Vipin said:
2 decades ago
Alternative method::
Let the minutes covered when d situation occurs = x
now,
(total degrees covered by minute hand) - (total degrees covered by hr hand)= (outer angle between 12 and 9) i.e.
6x - x/2 = 270
x=540/11 which is our ans. :)
Let the minutes covered when d situation occurs = x
now,
(total degrees covered by minute hand) - (total degrees covered by hr hand)= (outer angle between 12 and 9) i.e.
6x - x/2 = 270
x=540/11 which is our ans. :)
Manish said:
2 decades ago
I don't understand this method please explain it. Why we take 55 min ?
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