Latest Syntel Aptitude Question SOLUTION: A clock was 7mts behind the actual time on 3 p.m. on Wednesday and 8 mts ahead of actual time on 4 p.m. Friday. when will it show the correct time?

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A clock was 7mts behind the actual time on 3 p.m. on Wednesday and 8 mts ahead of actual time on 4 p.m. Friday. when will it show the correct time?

Asked In Syntel (12 years ago)

Solved sunny Read Solution (6)

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Read Solution (6) :

texoc choudhary  (11 years ago)

from 3 pm wed to 4 pm friday it take 49 hours to make -7 to +8 = 15 minutes difference .
so the wrong part change per minutes =(49*60)/15=(49*4)=196 minutes
this impies that evry 196 minutes clock is being increasing its speed by 1 minutes so for 7 minutes it will takes 7*196=1372 minutes approx 22.86 hrs = 22 hr 49 minutes ...
so from 3 pm wed it takes 22hrs and 49 minutes to make zero minutes difference of being late =2:49pm pm thursday answer

Is this solution Helpfull? Yes (43) | No (9)  

sunny  (11 years ago)

from 3 pm wed to 4 pm friday it take 49 hours to make -7 to +8 = 15 minutes difference .
so the wrong part change per minutes =(49*60)/15=(49*4)=196 minutes
this impies that evry 196 minutes clock is being increasing its speed by 1 minutes so for 7 minutes it will takes 7*196=1372 minutes
now converting 1372 min in hours we have 22hr 52min...(we do it by dividing 1372 by 60 where quotient is hour n remainder is min)

so from 3 pm wed it takes 22hrs and 52 minutes to make zero minutes difference at 1:52 pm on thursday

Is this solution Helpfull? Yes (39) | No (1)  

Abha  (11 years ago)

time from 3 p.m wednesday to 4 p.m. friday=49hrs
the watch gain(7+8)min in 49hrs
so 7 mins are gain in(49*7)/15hrs=22.86hrs=23.26hrs
means 2:26 p.m. thursday

Is this solution Helpfull? Yes (8) | No (4)  

Siddhant Dash  (11 years ago)

Total time from 3 pm wednesday to 4 pm friday = 49 hrs

total time gained by clcok = 15 mins

so for 15 min change it takes 49 hrs
1 min change , 49/15 hr

7 min are to made up so 7 min change = (49*7) / 15 = 22.86 hrs = 22 hrs 0.86*60 min = 22 hrs 52 mins

ie clock is correct 22 hrs 52 mins after 3 pm Wednesday ie

15 00 + 22 52 = 37 hrs 52 mins - 24 00 = 13 hrs 52 min

so clock correct at 13 : 52 ie 1:52 PM on thursday

Is this solution Helpfull? Yes (8) | No   

kaleembaig  (12 years ago)

practically imposssible

Is this solution Helpfull? Yes (3) | No (27)  

Nakul Patekar  (10 years ago)

Around thursday 1:40 PM..

Is this solution Helpfull? Yes | No (4)  

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