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 4 of 4.
Rohit ranjan said:
1 decade ago
Relative speed of hour and minute hand in 1 rotation is=60-5=55.
Mangesh kondalkar said:
1 decade ago
In the duration of 1 hour an hour needle rotates only by duration of 5 min e.g from 1 o'clock to 2 o'clock and in the same time min hand will rotate by 60 min so the gain is (60 - 5) = 55 min.
Pradnya said:
1 decade ago
55 min. are gained in 60 min, what it mean pleas advise ?
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