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 5 of 6.
Rajesh said:
1 decade ago
Please explain why should we take 2 mins?
Tamizharasi said:
8 years ago
Thank you all for the given explanation.
Kamboji ganesh said:
7 years ago
Can you please explain the solution?
Ayush aryan said:
10 years ago
Great explanations. Thank you all.
Ggvhbh said:
5 months ago
How 4/5 came here? Please explain.
Sri said:
7 years ago
How we got 170 hrs above for 34/5?
Anu said:
8 years ago
Very helpful. Thanks a lot @Akash.
Moni said:
7 years ago
Explain me clearly to get it.
Vivek said:
7 years ago
The answer is 2 AM, not 2PM.
Pratik said:
9 years ago
Great explanation @Madhu.
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