Latest TCS Aptitude Question SOLUTION: c lock loses 1% time during the first w eek and then gains 2% time dur ing the next one week. If the clock was set right at 12 noon on a Sunday, w hat will be the time that the c

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(#M40011204) TCS question Keep an EYE

c lock loses 1% time during the first w eek and then gains 2% time dur ing the next one
week. If the clock was set right at 12 noon on a Sunday, w hat will be the time that the
c lock will show exactly 14 days fro m the time it was set right?
(a) 1: 36: 48 (b) 1: 40: 48 (c) 1: 41: 24 (d) 10: 19: 12

Asked In TCS (11 years ago)

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snehasish samanta  (11 years ago)

option b... ..because of total 1%gain in 7 day.. so in 1 hour gain 3/5;
and i7 day gain hour is 1+204/300.. and 204/300 hour= (40+(4/5)) minute ... and
4/5 minute is 48 sec...

so ans b>....

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amrendra kumar  (11 years ago)

The clock loses 1% time during the first week.

In a day there are 24 hours and in a week there are 7 days. Therefore, there are 7 * 24 = 168 hours in a week.

If the clock loses 1% time during the first week, then it will show a time which is 1% of 168 hours less than 12 Noon at the end of the first week = 1.68 hours less.

Subsequently, the clock gains 2% during the next week. The second week has 168 hours and the clock gains 2% time = 2% of 168 hours = 3.36 hours more than the actual time.

As it lost 1.68 hours during the first week and then gained 3.36 hours during the next week, the net result will be a -1.68 + 3.36 = 1.68 hour net gain in time.

So the clock will show a time which is 1.68 hours more than 12 Noon two weeks from the time it was set right.

1.68 hours = 1 hour and 40.8 minutes = 1 hour + 40 minutes + 48 seconds.

i.e. 1 : 40 : 48 P.M.

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Sanket Kumar  (11 years ago)

@SNEHASISH SAMANTA can u please elaborate a bit more.Would be of great help.

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