Latest HCL Aptitude Question SOLUTION: A grandfather clock was set right at 6:30 am. This old clock loses 2 minutes and 30seconds every 52 minutes. What is the correct time when the clock shows 12.15 am

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A grandfather clock was set right at 6:30 am. This old clock loses 2 minutes and 30seconds every 52 minutes. What is the correct time when the clock shows 12.15 am

Asked In HCL Vignesh (12 years ago)

Solved Neeraj Jain Read Solution (6)

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Read Solution (6) :

Neeraj Jain  (10 years ago)

Ans :--> 01:06:01(hour:min:sec) Am ( in the morning)
Explanation==>
total minutes between 6:30 Am to 12:15 Am is 1065 minutes
Now number of times 52 min repeated in 1065 ==> 1065/52 ==> 20.480 times (approx).
Given that every on 52 min clock looses 2min and 30 sec (2.5 min approx);

So for 20.480 times clock will loose ==> 20.480 * 2.5 ==> 51.2 min

Now time is 12:15 Am , So add 51.2 min from it we will get 01:06:01 (hour:min:sec)Am

So Ans : 01:06:01 Am is the correct time when time in Daddu's watch is 12:15 Am

Is this solution Helpfull? Yes (12) | No (3)  

Deepak Kumar  (10 years ago)

11.59 is answer

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VIKASH KUMAR SHARMA  (9 years ago)

answer is approx 11:24 pm
difference in time between 6:30 am and 12:15 am will be 1065 minutes
the clock looses 2mn 30 sec every 52 minutes
therefore it will loose approx 51 minutes

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Sidak  (12 years ago)

Approx. 1:09 AM will be right time when clock shows 12.15 am.

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harpreet  (10 years ago)

can anyone explain it?

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Dhiraj Kumar  (9 years ago)

total no, of min between 6.30 to 12.15=1125min
it says the clock r lagging after 52 min therefore no.of times it lagging=1125/52=21.63 now at one time it lags 2.5 min therefore total time it is lagging=2.5*21.63=>54.086
ans=12.15am +54.086 min=>1.09

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