Aptitude - Clock - Discussion
Discussion Forum : Clock - General Questions (Q.No. 16)
16.
At what time, in minutes, between 3 o'clock and 4 o'clock, both the needles will coincide each other?
Answer: Option
Explanation:
At 3 o'clock, the minute hand is 15 min. spaces apart from the hour hand.
To be coincident, it must gain 15 min. spaces.
55 min. are gained in 60 min.
| 15 min. are gained in |  |
60 | x 15 |  min |
= | 16 | 4 | min. |
| 55 | 11 |
 The hands are coincident at 16 |
4 | min. past 3. |
| 11 |
Discussion:
33 comments Page 2 of 4.
Pavan said:
6 years ago
Thank you @sai.
Nancy said:
6 years ago
How to find 15min space?
Mohan said:
6 years ago
How 15 min space comes? if we consider 3 o clock. Please explain.
Sumi said:
7 years ago
Thanks all for explaining.
Harshitha said:
7 years ago
Thanks to all for explaining, I understand the answer.
Raju said:
8 years ago
Let M for a minute, T1 for the starting hour and Y for a nangle.
Then the formula be M= 2/11(T1*30- 0r + Y).
2/11(3*30+-0) because coincide means angle is zero.
2*90/11.
180/11.
16 4/11 answer.
Then the formula be M= 2/11(T1*30- 0r + Y).
2/11(3*30+-0) because coincide means angle is zero.
2*90/11.
180/11.
16 4/11 answer.
Prawesh Pradhan said:
8 years ago
m= 60/11 * t,
m= 60/11 * 3.
m= 16 4/11.
m= 60/11 * 3.
m= 16 4/11.
Peaceful said:
8 years ago
No, The needles only move after every second. With time unit smaller than one second, all needles stay where they are. Since 16 (4/11) minutes = 16*60 (4/11) (in second) is not a natural number, So, it cannot be the answer.
Anurag nayak said:
1 decade ago
theta=30h - 11/2 m
theta=0;
30h=11/2 m
m=180/11;
theta=0;
30h=11/2 m
m=180/11;
Vaibhav gupta said:
8 years ago
60/55 why it used please explain it?
Hour hand travel only 5 minutes in an hour so why we use 55 minutes.
Hour hand travel only 5 minutes in an hour so why we use 55 minutes.
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