SOLUTION: Santa's fish tank contains 200 gallons of sea water. The sea water is 7.5% salt. How many gallons of fresh water must be added to the tank so that the mixture only contains 7% salt
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Question 389939: Santa's fish tank contains 200 gallons of sea water. The sea water is 7.5% salt. How many gallons of fresh water must be added to the tank so that the mixture only contains 7% salt? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = gallons of fresh water to be added
In words:
(salt in sea water already present)/(gallons of sea water + fresh water added) = 7%
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given:
gallons of sea water =
gallons of salt in sea water =
--------------- gallons
14.285 gallons of fresh water should be added
check:
