Respuesta :

Find fraction of snappers and catfish:

1/3 + 2/9 = 3/9 + 2/9 = 5/9


Find fraction of goldfish:

1 - 5/9 = 4/9


4/9 = 40 goldfish

1/9 = 40 ÷ 4 = 10

9/9 = 10 x 9 = 90


Answer: 90 fish in the tank
90 fish are in the tank