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.
Pradeep said:
1 decade ago
Here we can use the formula:
theta=11(m)/2-30(h)
same direction means 0 degree; hour=9
180=11(m)/2-30(9)
m=49 1/11
theta=11(m)/2-30(h)
same direction means 0 degree; hour=9
180=11(m)/2-30(9)
m=49 1/11
Niki said:
1 decade ago
@Gaurav Mittal.
How you counted moves for minute hand ? i.e. You took 6x. How? Can you please explain?
How you counted moves for minute hand ? i.e. You took 6x. How? Can you please explain?
Sonam said:
10 years 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.
Abhishek said:
10 years 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.
$hr!dhar said:
1 decade ago
@Shree Hema: Hats Off To u!!! Awsm Formula!!
thnks ;)
can u plz give derivation of formula...
thnks ;)
can u plz give derivation of formula...
Jasraj khatri said:
1 decade ago
When minute hand reach to 9, hour hand reach near to 10. Then why you count 45 spaces?
Inoo said:
1 decade ago
What does this means 55 min. spaces gained in 60 min ? what does spaces here means?
Rossy said:
1 decade ago
Can someone please explain me, what is the main concept used to solve this problem?
Vinayak said:
7 years ago
How does 60/55*45 become 49 1/11?
Please if anybody can explain this?
Please if anybody can explain this?
(2)
Manish said:
1 decade ago
I don't understand this method please explain it. Why we take 55 min ?
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