Aptitude - Clock - Discussion
Discussion Forum : Clock - General Questions (Q.No. 5)
5.
How much does a watch lose per day, if its hands coincide every 64 minutes?
Answer: Option
Explanation:
55 min. spaces are covered in 60 min.
| 60 min. spaces are covered in |  |
60 | x 60 |  min. |
= 65 | 5 | min. |
| 55 | 11 |
| Loss in 64 min. = | |
65 | 5 | - 64 | |
= | 16 | min. |
| 11 | 11 |
| Loss in 24 hrs = | |
16 | x | 1 | x 24 x 60 | min. |
= | 32 | 8 | min. |
| 11 | 64 | 11 |
Discussion:
119 comments Page 8 of 12.
Naresh said:
10 years ago
How much can a watch gain or loss per day if its hand coincide every 65 minutes?
Can anyone explain this please?
Thanks in advance.
Can anyone explain this please?
Thanks in advance.
Twinkle said:
10 years ago
Using unitary method:
720/11 minutes of correct clock = 64 mins of incorrect clock.
Therefore 24*60 mins of correct clock = (64*24*60*11)/720 which gives 32 minutes exactly.
Where is discrepancy in this method?
720/11 minutes of correct clock = 64 mins of incorrect clock.
Therefore 24*60 mins of correct clock = (64*24*60*11)/720 which gives 32 minutes exactly.
Where is discrepancy in this method?
Dharmendra nath said:
10 years ago
Why it is not correct 24*4=96?
Moredhvaj said:
10 years ago
In 720/11 minutes.....incorrect clock gain (720/11-64) = 16/11.
In 1 minutes.....incorrect clock gain= (16/11)*(11/720).
In 24 hour.....incorrect clock gain = (16/11)*(11/720)*24*60.
= 32 min exactly.
In 1 minutes.....incorrect clock gain= (16/11)*(11/720).
In 24 hour.....incorrect clock gain = (16/11)*(11/720)*24*60.
= 32 min exactly.
Manab said:
10 years ago
Formula for (720/11-m) (60*24/m)?
Manab said:
10 years ago
Direct formula:
Gain or loss = (720/11-m) (60*24/m).
Here m = 64,
Hence (720/11-64) (60*24/64) = (65.45-64) (45/2) = 1.45*22.5 = 32.625.
Gain or loss = (720/11-m) (60*24/m).
Here m = 64,
Hence (720/11-64) (60*24/64) = (65.45-64) (45/2) = 1.45*22.5 = 32.625.
Suma said:
10 years ago
Well Said @Manpreet, @Twinkle, @Abhilash.
But @Abhilash can you please elaborate how the step 64*55/60 came?
But @Abhilash can you please elaborate how the step 64*55/60 came?
Kanishk said:
10 years ago
I think question should be "How much does a watch gain per day". Because lose means it loses 16/11 min from 65 (5/11).
Tilak Dewangan said:
9 years ago
If hands coincide earlier than expected time, how I'd losing time?
Deepa said:
9 years ago
How fast or slow is the hand moving? like this problems I need to know please help me.
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