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concentration

This topic has 1 expert reply and 1 member reply
Chrystelle Junior | Next Rank: 30 Posts Default Avatar
Joined
07 Dec 2006
Posted:
19 messages

concentration

Post Tue Jan 02, 2007 5:43 am
hi
Does someone have an idea?

1, The concentration of a certain chemical in a full water tank depends on the depth of the water. At a depth that is x feet below the top of the tank, the concentration is parts per million, where 0 < x < 4. To the nearest 0.1 foot, at what depth is the concentration equal to 6 parts per million?
(A) 2.4 ft
(B) 2.5 ft
(C) 2.8 ft
(D) 3.0 ft
(E) 3.2 ft

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aim-wsc Legendary Member
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Post Wed Jan 03, 2007 3:47 am
absolutely stumped.
Shocked

or maybe i am not been able to see the question Confused some problem with my browser...
you hv not attached any file with it, right?

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Stacey Koprince GMAT Instructor
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Post Sat Jan 06, 2007 3:54 pm
Hi, Chrystelle

I think your transcription of the problem might be missing some info - possibly at the line that says "the concentration is parts per million" - is there supposed to be a value between "is" and "parts"? As written, there is not enough information given in the problem to solve it. Please do post again if you figure out what is missing.

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