Question

The aquarium has 3 more yellow fish than green fish. 60 percent of the fish are yellow. How many green fish are in the aquarium? Show your work.

Answer 1

choose the variables first

Answer 2

Yellow fish and green fish, x and y

Answer 3

aka, yellow fish is x, green fish is y

Answer 4

How would you setup the equation for 3 more yellow fish than green fish?

Answer 5

Should i take that as you don't know how?

Answer 6

Well, since there are 3 more yellow fish, green plus 3, equals yellow
so, y=x+3
agreed?

Answer 7

ok so y=x+3 bekause there are 3 more yellow fish than green,,got it karry on

Answer 8

. 60 percent of the fish are yellow.
0.6(x+y) = x
Yea?

Answer 9

I'm gonna fish this then ig lol

Answer 10

and guess what, I'm changing the variables, the confuse me
Yellow will by y, green will be g

Answer 11

The aquarium has 3 more yellow fish than green fish. 60 percent of the fish are yellow. How many green fish are in the aquarium? Show your work.

Answer 12

So, g+3=y
and
(g+y)0.6 = y

Answer 13

The easiest way would be desmos, which would be
https://www.desmos.com/calculator/n5ezfcz4wh

Answer 14

And because you want the green, (desmos made me change it to x), it is 6, 6 green fish

Answer 15

Or, we could try the substitution method

Answer 16

g+3=y
and
(g+y)0.6 = y

g+3 = (g+y)0.6
g+3 = (g+g+3)0.6
g+3 = 1.2g + 1.8
3 = 0.2 g + 1.8
1.2 = 0.2g
g=6
6 fish

Answer 17

So, there are 6 fish, you can use either way, although I wouldn't recommend the elimination method for this problem