Lacy's blue fish tank has now 3 2/3 gallons of water.
If Lacy has 10 gallons of water and she pour an equal number of gallons of water into each of her 3 fish tanks, then the amount of water each tank will have is equal to the quotient of 10 divided by 3.
amount of water poured in each tank = 10 gallons / 3
amount of water poured in each tank = 10/3 gallons
If Lacy's blue fish tank already has 1/3 gallon of water in it, then the total amount of water the blue fish tank has is the sum of the two fractions.
Add the initial amount and the amount poured in after.
1/3 + 10/3 = 11/3 = 3 2/3 gallons
Simplifying the fraction, Lacy's blue fish tank has now 3 2/3 gallons of water.
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