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 3 of 6.
Abhishek said:
7 years ago
Sir, why the clock show right time on gaining of 2 minutes?
Sri said:
7 years ago
How we got 170 hrs above for 34/5?
Kamboji ganesh said:
7 years ago
Can you please explain the solution?
Darshit said:
9 years ago
Did'nt get it, please explain it once more and elaborate it.
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?
Vivek said:
7 years ago
The answer is 2 AM, not 2PM.
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.
Ggvhbh said:
4 months ago
How 4/5 came here? Please explain.
Pushpa said:
3 weeks ago
I am not understand the answer. Please anyone help me to get this.
Deepak said:
1 decade ago
2 min+4 min 48 sec = 34/5.
2+4(48/60) = 34/5.
2+4(48/60) = 34/5.
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