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Each of the three people X, Y and Z were given an identical task to

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DS Forum Moderator
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Each of the three people X, Y and Z were given an identical task to  [#permalink]

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New post 05 Jul 2018, 20:31
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A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

77% (01:23) correct 23% (01:34) wrong based on 14 sessions

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Each of the three people X, Y and Z were given an identical task to perform. Once started, none of them stopped before the task was completed. If Y takes 4 hours to finish the task, then among X, Y and Z - who finished the task first?

(1) X started at 9 am and he takes 3 hours to finish the task.

(2) Z started at 11 am and he takes 2 hours to finish the task.
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Re: Each of the three people X, Y and Z were given an identical task to  [#permalink]

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New post 05 Jul 2018, 22:18
Both statements talk about x and z, nothing about y. Insufficient or I didn't get the trick of the question :)

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Ans: E
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Re: Each of the three people X, Y and Z were given an identical task to  [#permalink]

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New post 06 Jul 2018, 09:53
st 1. only about x . z=? insufficient
st 2. only z , no x. insufficient.

Now the question asks us to determine which one of the three finished first. This question is a little ambiguous.
Case 1. As 2 of them start at different timings and the timing of Y is not known , so even if we know respective efficiencies we still do not know when Y started. SO E.

Case 2. Assuming starting time does not matter , Z finishes first. But IMO case 2 is absurd.

So E. I feel like this isnt AT ALL a GMAT LIKE Q.
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Re: Each of the three people X, Y and Z were given an identical task to &nbs [#permalink] 06 Jul 2018, 09:53
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Each of the three people X, Y and Z were given an identical task to

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