SOLUTION: I am trying to clarify the notion of fresh versus salt water with a class. The ocean has a salinity level of 3.5%. If I have 8 ounces of fresh water, how much salt must I add to ac

Question 1057724: I am trying to clarify the notion of fresh versus salt water with a class. The ocean has a salinity level of 3.5%. If I have 8 ounces of fresh water, how much salt must I add to achieve a solution with 3.5% salinity? I would like to create this mixture for the students.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = ounces of salt you need to add

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You need to add .2902 ounces of salt
( .29 or .3, whatever the limits of accuracy are )
---------------------
check:

close enough

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