Latest TCS Aptitude Question SOLUTION: a watch gains 5 mnts every hour.it is set right at 12 noon.what is the true time when the watch is showing 5 pm,on the same day???ans=4:480/13

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a watch gains 5 mnts every hour.it is set right at 12 noon.what is the true time when the watch is showing 5 pm,on the same day???ans=4:480/13

Asked In TCS vishal (12 years ago)

Unsolved Read Solution (9)

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Read Solution (9) :

aamir  (12 years ago)

Let the actual time be x hours.
Then the time in the watch is x*(1+5/60) hours.
Hours passed since 12 noon = 5
∴ x*(1+5/60) = 5
or, x*(60+5) = 5 * 60
or, x = 300/65 = 60/13
Actual time = 60/13 hrs
= 4 8/13 hrs
=4 hrs (8*60)/13 min
= 4:480/13

Is this solution Helpfull? Yes (22) | No (2)  

Anurag  (12 years ago)

the watch gains 5 mins every hour
so after end of 1 hr the watch has gone 65 mins instead of 60 mins
so it travels 65 mins when it should have gone 60 mins
so it travels 60 mins(1hr) when it should have gone 60*60/65=55.38 mins
so after 5 hrs it goes 55.38*5=276.9mins
so actual time=276.9/60=4.61=4hr36min

Is this solution Helpfull? Yes (19) | No (4)  

udit narayana  (12 years ago)

65 min of 1st clock = 60 min of correct clock
5 hr of this clock = 60x5/65 of correct clock=60/13
correct time is 60/13 hr after 12 = 4:8/13=4:480/13

Is this solution Helpfull? Yes (8) | No   

vishal  (12 years ago)

i know the correct ans is 4:480/13 but don no the solution

Is this solution Helpfull? Yes (1) | No (3)  

mahendra singh  (12 years ago)

the watch gain 5 min/hr so 60*5/65
now d correct clock according to dis=60/13 hr
that means 4 hr n 48 min arround from clock 12 noon.
so correct clock wiil be=4:48/13

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juhi sharma  (12 years ago)

don't know

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Anurag  (12 years ago)

4hr36min=4:480/13.

Is this solution Helpfull? Yes | No (3)  

shaif hashmi khan  (12 years ago)

congrats buddy.....please pass on d valuable insights u hav got regarding TCS apti pattern to dis id : shaifkhan1989@gmail.com
Thanx :)

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jayasri  (12 years ago)

abhilasa.biswas90@gmail.com
plz mail me as soon as possible.............

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