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How many more first time jobless claims were filed in week P

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Joined: 27 Feb 2010
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How many more first time jobless claims were filed in week P [#permalink] New post 28 Apr 2010, 06:49
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Question Stats:

89% (01:40) correct 11% (01:11) wrong based on 16 sessions
How many more first time jobless claims were filed in week P than in week T ?

(1) For weeks P, Q, R and S the average (arithmetic mean) number of first time jobless claimed was 388,250
(2) For weeks Q, R, S and T, the average (arithmetic mean) number of first time jobless claimed was 383,000
[Reveal] Spoiler: OA
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Re: How many more first time jobless claims were filed in week P [#permalink] New post 28 Apr 2010, 07:52
We need the value of P-T ?

(1) for weeks P,Q,R and S the average ( arithmetic mean) number of first time jobless claimed was 388,250.
This means that P+Q+R+S = 4 * 388,250
Clearly insuff.

(2) for weeks Q,R,S and T, the average ( arithmetic mean) number of first time jobless claimed was 383,000
This means that Q+R+S+T = 4 * 383,000
Again clearly insuff.

Together substract 2 from 1.
We get P+Q+R+S - (Q+R+S+T) = 4 (388250 - 383000)
we get P - Q = 4 * (388250 - 383000)

Hence suff.
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Re: How many more first time jobless claims were filed in week P [#permalink] New post 04 Aug 2014, 06:39
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Re: How many more first time jobless claims were filed in week P   [#permalink] 04 Aug 2014, 06:39
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