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Two men, Phillip and Omar, start at the same time working separately o

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Two men, Phillip and Omar, start at the same time working separately o [#permalink]

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New post 21 Mar 2017, 04:20
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E

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  15% (low)

Question Stats:

78% (00:47) correct 22% (00:42) wrong based on 82 sessions

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Two men, Phillip and Omar, start at the same time working separately on similar equally sized jobs, which of the men completes the job first?

(1) Omar takes 6 hours do to the entire job.
(2) Phillip works at a constant rate only stopping for one hour during which he could have done 1/5 of the job.
[Reveal] Spoiler: OA

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Re: Two men, Phillip and Omar, start at the same time working separately o [#permalink]

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New post 21 Mar 2017, 07:47
Bunuel wrote:
Two men, Phillip and Omar, start at the same time working separately on similar equally sized jobs, which of the men completes the job first?

(1) Omar takes 6 hours do to the entire job.
(2) Phillip works at a constant rate only stopping for one hour during which he could have done 1/5 of the job.


(1) Omar takes 6 hours do to the entire job - Not sufficient as we have no clue on Philip's efficiency.

(2) Phillip works at a constant rate only stopping for one hour during which he could have done 1/5 of the job. - Not sufficient as we don't know the efficiency of Omar.

(1) + (2)
Omar takes 6 hours.
Philip completes 1/5th of a job in 1 hour. So time taken to complete the entire job is 5 hours. Since he rests for an hour, the actual time taken is 6 hours.
Both Philip and Omar complete the job in same time. - Not sufficient.

Hence E.

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Re: Two men, Phillip and Omar, start at the same time working separately o [#permalink]

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New post 21 Mar 2017, 16:57
1 is insufficient because we do not know how long it took Phillip to do the entire job
2 is insufficient because we do not know how long it took Phillip and Omar to do the job.

1 & 2 combined - still insufficient because we do not know how long it took Phillip to do the entire job.

Answer: E
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Re: Two men, Phillip and Omar, start at the same time working separately o [#permalink]

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New post 22 Mar 2017, 05:21
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Bunuel wrote:
Two men, Phillip and Omar, start at the same time working separately on similar equally sized jobs, which of the men completes the job first?

(1) Omar takes 6 hours do to the entire job.
(2) Phillip works at a constant rate only stopping for one hour during which he could have done 1/5 of the job.


we need the rate of work for each of two.

St 1: gives information about OMAR. no information is given for Phillip. INSUFFICIENT
St 2: gives information about PHILLIP. no information is given for Omar. INSUFFICIENT

ST 1 & St 2: gives information about both. SUFFICIENT

Option C
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Re: Two men, Phillip and Omar, start at the same time working separately o [#permalink]

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New post 22 Mar 2017, 20:04
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Bunuel wrote:
Two men, Phillip and Omar, start at the same time working separately on similar equally sized jobs, which of the men completes the job first?

(1) Omar takes 6 hours do to the entire job.
(2) Phillip works at a constant rate only stopping for one hour during which he could have done 1/5 of the job.



ANS : C


1) no information about pilip rate. rate of omar is 1/6
2) no information about omar rate. Rate of philip is 1/5

combined .. sufficient
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Re: Two men, Phillip and Omar, start at the same time working separately o   [#permalink] 22 Mar 2017, 20:04
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Two men, Phillip and Omar, start at the same time working separately o

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