Question

The aquarium has 6 fewer yellow fish than green fish. 40 percent of the fish are yellow. How many green fish are in the aquarium? Show your work.

Answer 1

Y = number of yellow fish
G = number of green fish

Y = G - 6
Y = 0.40 * (Y+G)

G - 6 = 0.4*(G-6+G)
G - 6 = 0.4*(2G-6)
G - 6 = 0.8G -2.4
0.2G = 3.6
G = 3.6/0.2=18


There are 18 green fish.