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M03 Q 36

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Joined: 02 May 2012
Posts: 109
Location: United Kingdom
WE: Account Management (Other)
Followers: 0

Kudos [?]: 14 [0], given: 34

Re: M03 Q 36 [#permalink] New post 18 Sep 2012, 07:54
If I understand the concerns of people who dislike the question, they are saying that when the swimmer swims up and down the river we can't be sure that he / she is experience any current. In otherwords, current could be 0. I think it's reasonable to assume in any exam (GMAT or otherwise) that any river has a current all the time. Therefore is current>0, and x>y.

Try picking numbers:

Speed of swimmer = 2km/hr
Speed of current = 1 km/hr

Distance of swim = 2 km
Up / down round trip:
Time up =d/v = (0.5 x 2)/(2-1) = 1/1 = 1

Time down = (0.5 x 2)/(2+1) = 1/3
Total time (x)= 1.33
Still water trip
Time (y)= 2/2 = 1
1.33>1 so x>y

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Re: M03 Q 36   [#permalink] 18 Sep 2012, 07:54
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Experts publish their posts in the topic M03-36 Bunuel 1 15 Sep 2014, 23:21
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17 Experts publish their posts in the topic M03 Q33 pjmm83 15 02 Nov 2008, 19:03
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M03 Q 36

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