.
No saline solution higher than 26%.
Learn it from THIS Wikipedia article
https://en.wikipedia.org/wiki/Seawater
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To @greenestamps:
I think, it is totally clear to you, as it is clear to me, that this problem came not from a textbook.
Hence, it was created by somebody, who DOES NOT KNOW the subject.
Tomorrow this incorrect problem will be placed to a somebody's web-site, and then this FALSE INFORMATION / DISINFORMATION
will be spread AS A VIRUS over the Internet.
In couple of years the entire Internet will be one huge GARBAGE BOX with no bounds.