Aptitude - Clock - Discussion
Discussion Forum : Clock - General Questions (Q.No. 19)
19.
A watch which gains uniformly is 2 minutes low at noon on Monday and is 4 min. 48 sec fast at 2 p.m. on the following Monday. When was it correct?
Answer: Option
Explanation:
Time from 12 p.m. on Monday to 2 p.m. on the following Monday = 7 days 2 hours = 170 hours.
 The watch gains |
 |
2 + 4 | 4 |  min. |
or | 34 | min. in 170 hrs. |
| 5 | 5 |
| Now, | 34 | min. are gained in 170 hrs. |
| 5 |
| 2 min. are gained in |
|
170 x | 5 | x 2 | hrs |
= 50 hrs. |
| 34 |
Watch is correct 2 days 2 hrs. after 12 p.m. on Monday i.e., it will be correct at 2 p.m. on Wednesday.
Discussion:
56 comments Page 2 of 6.
Nitesh Nandwana said:
1 decade ago
@Vinesh
The question isn't that 2 min should be added or subtracted, the question is that why are we doing so ? got it ??
"gains uniformly is 2 minutes low". It means clock is 2 min late at noon on Monday Okay ?
Now on next Monday it is 4 min 48 sec fast means it total gain is
= ( 2 min + 4min 48sec)
The question isn't that 2 min should be added or subtracted, the question is that why are we doing so ? got it ??
"gains uniformly is 2 minutes low". It means clock is 2 min late at noon on Monday Okay ?
Now on next Monday it is 4 min 48 sec fast means it total gain is
= ( 2 min + 4min 48sec)
Vivek gupta said:
1 decade ago
@Vinesh.
The Clock was 2 minute late on Monday noon. ok.
Again it found 4 min and 48 sec fast on next Monday 2 p.m.
Means clock was gaining continuously, from Monday noon to next Monday 2 p.m.
Hence total gain = 2 min +4 min and 48 sec.
The Clock was 2 minute late on Monday noon. ok.
Again it found 4 min and 48 sec fast on next Monday 2 p.m.
Means clock was gaining continuously, from Monday noon to next Monday 2 p.m.
Hence total gain = 2 min +4 min and 48 sec.
Nitin said:
5 years ago
@All.
Gaining always count from the correct time. 4min gain from correct time but the clock is late by 2min also, therefore, we must include the time (from -2min to correct time) and then add 4 min to them.
Gaining always count from the correct time. 4min gain from correct time but the clock is late by 2min also, therefore, we must include the time (from -2min to correct time) and then add 4 min to them.
Koya said:
8 years ago
Sam sets alarm at 5 am. But the clock loses 16 minutes in 24 hours. Effectively, the clock indicates 10:00 pm on the 4th day. Find out the original time of the clock.
Tell me the answer for this question.
Tell me the answer for this question.
(1)
Malli said:
1 decade ago
Please anybody explain me the gain and loose concept of the clock. I thought we should subtract 2 mins from 4 mins 4 sec. So we can calculate actual gain, so how we add both loss and gain of time >?
(1)
Siddhant said:
6 years ago
How we are getting after calculation 4min 48 sec in denominator i.e. (5?).
I understood 4*60=240 but I am not getting that how 5 came in the denominator.
Please, anyone help me. Thanks.
I understood 4*60=240 but I am not getting that how 5 came in the denominator.
Please, anyone help me. Thanks.
(1)
Beatrice Abongo` said:
9 years ago
What will be the answer for the question?
A watch loses 5 seconds every 2 hours it is set on Wednesday at 10:00 am what time will it show the following Wednesday at 10:00 am?
A watch loses 5 seconds every 2 hours it is set on Wednesday at 10:00 am what time will it show the following Wednesday at 10:00 am?
Holaram said:
6 years ago
2 min late means that at some point it will show correct time and then after that it gains 4 min 48 sec. So total gain= 2min to correct time to 4 min 48 sec i.e. 2+4min48sec.
(1)
Devender said:
7 years ago
The minute hand of a clock overtakes the hour hand at intervals of 65 minutes of the correct time. How much a day does the clock gain or loss? Can anyone answer this?
Gautam said:
5 years ago
@Nitin
Initially, it is 2 min low at 12 pm so to compensate that loss 2min gain is there but at last, why do they calculate for 2 min gain individually? Explain it.
Initially, it is 2 min low at 12 pm so to compensate that loss 2min gain is there but at last, why do they calculate for 2 min gain individually? Explain it.
(1)
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