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

So say variable G represents green fish.

So...
\[\frac{ (G+3) }{ 60 }=\frac{ 40x }{ 120 }\]

Cross multiply that.

Answer 2

@kekeman

Answer 3

G = 20x - 3?

Answer 4

No. (G+3) cross multiplies into 120, 60 into 40x (x is supposed to be g)

It then becomes;
\[60g=40g+120\]
Subtract 40g on both sides.

Answer 5

@kekeman

Answer 6

Okay well after subtracting 40g on both sides, it becomes;

\[20g=120\]

Divide by 20;

\[\frac{ 120 }{ 20 }\]Is what @kekeman ?

Answer 7

Which is 6

Answer 8

Yes. So G = 6.

Answer 9

So there are 6 green fish in the aquarium

Answer 10

Yes. And 9 yellow fish. So that makes 15 fish in total. Good job.

Answer 11

Thank you!

Answer 12

You're welcome.