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4 votes
The variable x represents the number of angelfish Carlos bought and the variable y represents the number of parrotfish he bought.

Carlos bought 405 tropical fish for a museum display. He bought 8 times as many parrotfish as angelfish.

How many of each type of fish did he buy?

Which system of equations models this problem?



{x+y=405
y=8x

{x−y=405
y=8x

{x+4y=8
y=405x

{x+y=8
y=405x

The variable x represents the number of angelfish Carlos bought and the variable y-example-1

2 Answers

6 votes
My Answer: {x+y=405
y=8x

Hope I helped! :D
User Yonigo
by
7.9k points
4 votes
x + y = 405
y = 8x

To solve:
Plug the second equation into the first and solve for x.
x + 8x = 405
9x = 405
Divide both sides by 9
x = 45

Use the second equation to find y.
y = 8(45)
y = 360

45 angelfish
360 parrotfish
User Motsi
by
8.3k points
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