Ill decides to move her fish from a 20 gallon aquarium to a 50 gallon aquarium. she added 3 tablespoons of salt to her old aquarium. if she wishes to maintain to same salinity level, how many tablespoons should she add to her new aquarium?

In the old aquarium, 3 tablespoons of salt were used for 20 gallons. That's a conversion ratio of

That is, for every gallon of water in the aquarium, there was 0.15 tbsp of salt. So a 50 gallon aquarium, Ill should add

to maintain the salinity.

18

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