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What time will a watch show at noon on Wednesday if it loses x second

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Math Expert
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Joined: 02 Sep 2009
Posts: 56257
What time will a watch show at noon on Wednesday if it loses x second  [#permalink]

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New post 19 Feb 2018, 22:53
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

80% (00:39) correct 20% (00:42) wrong based on 16 sessions

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Joined: 07 Dec 2017
Posts: 1074
Re: What time will a watch show at noon on Wednesday if it loses x second  [#permalink]

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New post 19 Feb 2018, 23:50
Bunuel wrote:
What time will a watch show at noon on Wednesday if it loses x seconds every y hours?

(1) x = 6

(2) y = 24


This is similar to a rate/work question:
our 'work' is the time lost our 'rate' is x/y seconds per hour and our 'time' is how long the watch has been losing time.
So, to calculate the 'work' = the end time on Wednesday we need to know x/y and when it started losing time.
We'll look for an answer that gives us these qualities, a Logical approach.

(1) gives us only x.
Insufficient.

(2) gives us only y.
Insufficient.

Combined: gives only x/y.
Still insufficient.

(E) is our answer.
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Re: What time will a watch show at noon on Wednesday if it loses x second   [#permalink] 19 Feb 2018, 23:50
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