Aptitude - Clock - Discussion
Discussion Forum : Clock - General Questions (Q.No. 5)
5.
How much does a watch lose per day, if its hands coincide every 64 minutes?
Answer: Option
Explanation:
55 min. spaces are covered in 60 min.
| 60 min. spaces are covered in |  |
60 | x 60 |  min. |
= 65 | 5 | min. |
| 55 | 11 |
| Loss in 64 min. = | |
65 | 5 | - 64 | |
= | 16 | min. |
| 11 | 11 |
| Loss in 24 hrs = | |
16 | x | 1 | x 24 x 60 | min. |
= | 32 | 8 | min. |
| 11 | 64 | 11 |
Discussion:
119 comments Page 5 of 12.
Shivanand said:
9 years ago
@Harish.
To find mirror time jus subtract given time as ==>hour time by 11 and min time by 60. You'll get the answer for ex 10.25.11- 10 = 1 & 60 - 25 = 35 so the time will be 1.35.
To find mirror time jus subtract given time as ==>hour time by 11 and min time by 60. You'll get the answer for ex 10.25.11- 10 = 1 & 60 - 25 = 35 so the time will be 1.35.
NarESH said:
1 decade ago
A watch which gains uniformly, is 5 minutes slow at 8 o' clock in the morning on Sunday and it is 5 min. 48 sec fast at 8 p. M. On following Sunday. When was it correct?
Amit Kumar said:
9 years ago
I think the clock is gaining time. Because, instead of meeting after 65 5/11, it is meeting in 64 minutes only. Hence the question, "what time it looses is wrong".
Ankit Kumar said:
10 months ago
@All.
Since the Normal clock coincides after every 65.45 min. But in question, it is given that hands coincide after 64 mins. Hence, the clock is gaining time.
Since the Normal clock coincides after every 65.45 min. But in question, it is given that hands coincide after 64 mins. Hence, the clock is gaining time.
(8)
Mukul said:
8 years ago
The minute hand of a clock overtakes the hour hand at intervals of M minutes of correct time. The clock gains or loses in a day by=(72011/M)(60 * 24M) minutes.
Abdeali Chitalwala said:
5 years ago
The clock is GAINING 1 and 5/11 mins every hour and not losing.
There's an error in the question.
Hence, the clock will GAIN 32 and 8/11 mins in one day.
There's an error in the question.
Hence, the clock will GAIN 32 and 8/11 mins in one day.
(5)
Debdeep said:
1 decade ago
Exactly @Vijendar.
I doubt in that point too. But it take me quite time.
Also the statement would be I think: "Gain in 65*5/11 is 16/11 min".
I doubt in that point too. But it take me quite time.
Also the statement would be I think: "Gain in 65*5/11 is 16/11 min".
Manab said:
10 years ago
Direct formula:
Gain or loss = (720/11-m) (60*24/m).
Here m = 64,
Hence (720/11-64) (60*24/64) = (65.45-64) (45/2) = 1.45*22.5 = 32.625.
Gain or loss = (720/11-m) (60*24/m).
Here m = 64,
Hence (720/11-64) (60*24/64) = (65.45-64) (45/2) = 1.45*22.5 = 32.625.
Vijender said:
1 decade ago
This question is wrong. If the hands coincide every 64 minutes, then it should be a gaining clock. So how could a gaining clock lose time?
Bajpai said:
8 years ago
I am unable to get the concept of -55 min space covered in 60 min. As well as the question about hands coincide every 64 min refers to?
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