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:
156 comments Page 4 of 16.
Snehashish Das said:
7 years ago
Here seeing so many controversies, I would suggest that if we take the exact accurate value of 925/60.
Then that is equal to 925/60=15.4166666667(if we take 15.41).
Simplification 185/12 that mean 15 and 5/12 part minute.
9 hrs= 9x60=540 min --- 185/12min = 524.58 min.
that means 3 hrs.59 min.35 sec.= 7/12 past 3.
Then that is equal to 925/60=15.4166666667(if we take 15.41).
Simplification 185/12 that mean 15 and 5/12 part minute.
9 hrs= 9x60=540 min --- 185/12min = 524.58 min.
that means 3 hrs.59 min.35 sec.= 7/12 past 3.
K.ROSHANRAJ said:
7 years ago
For every 3 mins 5 sec is gained so totally from 7.am to 4.15 pm there is an excess of 15 mins.
So subtract that 15 with the 4.15 pm,
And the answer will be at 4 pm.
So subtract that 15 with the 4.15 pm,
And the answer will be at 4 pm.
Hina said:
7 years ago
How 37/4 converts into 4?
Anyone explain please?
Anyone explain please?
Sunny singh said:
7 years ago
I think Option A will be correct.
Adharsh said:
8 years ago
Hi, I am not getting this. Please, anyone explain me to get this.
Ankit said:
8 years ago
3: 5 Sec (wrong Clock) = 3 min ( Right Clock).
Now convert 3:5 Sec into min = 3+(5/60)== 37/12 min.
37/12 min will be === to 3 min of wrong clock.
1min of wrong clock will be = 3*12/37 = 36/37min of right clock.
9:15 min will be of wrong clock ==36/37*555 ( Total time trvel = 9:15min =555min) of right clock.
= 19980/37.
= 540min.
= 9 hrs = 4 PM.
Thanks.
Now convert 3:5 Sec into min = 3+(5/60)== 37/12 min.
37/12 min will be === to 3 min of wrong clock.
1min of wrong clock will be = 3*12/37 = 36/37min of right clock.
9:15 min will be of wrong clock ==36/37*555 ( Total time trvel = 9:15min =555min) of right clock.
= 19980/37.
= 540min.
= 9 hrs = 4 PM.
Thanks.
Abhishek said:
8 years ago
Total 555min,
5 sec for 3 mins,
so total 925 sec increase,
i.e. 15mins 25 sec.
time is 4:15.
So corrected time 3 hrs 59 mins 45 secs.
5 sec for 3 mins,
so total 925 sec increase,
i.e. 15mins 25 sec.
time is 4:15.
So corrected time 3 hrs 59 mins 45 secs.
Yamini Dhanasekar said:
8 years ago
We can also solve it by;
Time from 7 a.m to 4.15 pm is 9hrs and 15 mins.
9hrs is 540 min and 15 min=555 min.
Then, how many 3 min in 555 min=555/3=185.
So, 5 sec is added 185 times.
185*5=925 sec.925 sec can be converted into 15 min(925/60=15.4 @approx 15min).
Watch shows the time at 4:15 pm.
15 min added.so the correct time is 4 PM.
Time from 7 a.m to 4.15 pm is 9hrs and 15 mins.
9hrs is 540 min and 15 min=555 min.
Then, how many 3 min in 555 min=555/3=185.
So, 5 sec is added 185 times.
185*5=925 sec.925 sec can be converted into 15 min(925/60=15.4 @approx 15min).
Watch shows the time at 4:15 pm.
15 min added.so the correct time is 4 PM.
(1)
Mayuri madavi said:
8 years ago
Find the ratio 15 sec, 1 min. Please explain this question.
Jose said:
8 years ago
How to solve 555/60 = 37/4?
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