Aptitude - Clock - Discussion
Discussion Forum : Clock - General Questions (Q.No. 4)
4.
A watch which gains 5 seconds in 3 minutes was set right at 7 a.m. In the afternoon of the same day, when the watch indicated quarter past 4 o'clock, the true time is:
Answer: Option
Explanation:
| Time from 7 a.m. to 4.15 p.m. = 9 hrs 15 min. = | 37 | hrs. |
| 4 |
3 min. 5 sec. of this clock = 3 min. of the correct clock.
 |
37 | hrs of this clock = | 1 | hrs of the correct clock. |
| 720 | 20 |
| |
37 | hrs of this clock = |  |
1 | x | 720 | x | 37 |  |
hrs of the correct clock. |
| 4 | 20 | 37 | 4 |
= 9 hrs of the correct clock.
The correct time is 9 hrs after 7 a.m. i.e., 4 p.m.
Discussion:
154 comments Page 10 of 16.
Khalid said:
2 decades ago
For 9 hrs the clock gains 15 min. Then what about the remaining 15 min in the quarter past 4. ? can't understand. ?
Sai kumar said:
1 decade ago
3 past 5 seconds = 3 mins. There is no such one in the question.
How you took that one? Can you explain clearly?
How you took that one? Can you explain clearly?
Verkha said:
1 decade ago
How we got 4. 15 pm and 3 min. 5 sec. Of this clock = 3 min. Of the correct clock? Please I'm unable understand.
Soujanya said:
1 decade ago
Why they are multiplying the values at last to get 9 hrs? I am confused here. Rest all is clear. Please help me.
Rijas Das said:
9 years ago
Why are you calculating it in the hour? why not in minutes?
Both the answers are different. Make it clear.
Both the answers are different. Make it clear.
Poulam said:
9 years ago
Find the angle between the minute hand and the hour hand if the time 12:20? please give the answer.
Anandkumar.A said:
10 years ago
Hi guys anyone explain about the (3/60) + (5/(60*60)) = 185/3600 = 37/720. Calculation please.
Nitesh Nandwana said:
1 decade ago
@Saranya
(3/60)+(5/(60*60)) = 185/3600 = 37/720.
185, it is simple calculation babes.
(3/60)+(5/(60*60)) = 185/3600 = 37/720.
185, it is simple calculation babes.
Chandana said:
1 decade ago
Can anybody explain clearly how 37/4hrs of wrong clk converted to 9hrs of correct clock.
Rajat said:
5 years ago
9hrs and 15 minutes =555 and 555/60 = 9.25, but how it is 37/4?
Please explain.
Please explain.
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