can anyone tell me how to solve this problem? i cant understand what is it means.... Rosamaria is setting up a 20 gallon saltwater fish tank that needs to have a salt content of 3.5%. If she has 2.5% salt and water that has 3.7% salt, how many gallons of the water with 3.7% salt content should she use

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can anyone tell me how to solve this problem? i cant understand what is it means.... Rosamaria is setting up a 20 gallon saltwater fish tank that needs to have a salt content of 3.5%. If she has 2.5% salt and water that has 3.7% salt, how many gallons of the water with 3.7% salt content should she use

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lets call the amount of \(3.7\%\) salt water \(x\) since that is what you are trying to find
and since the total is \(20\) that means the amount of \(2.5\%\) solution is \(20-x\)
wait, i cant understand why amount of 3.7% salt water is x

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the total amount of salt you want is \(3.5\%\) of \(20\) which is \(.035\times 20=.7\) ok lets back up
what are you asked at the end of the question?
i mean that what is the thing that the problem is asking about
how many gallons of the water with 3.7% salt content should she use? is the question right?
i think it is ;;

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