The ratio of north american butterflies to south - id4478555 от owenwernert 13.04.2022 09:18

Question

Mathematics: The ratio of north american butterflies to south american butterflies at a butterfly park is 9: 5. the ratio of south american butterflies to european butterflies is 5: 3. there are 135 norrh american butterflies at the butterfly park. how many south american butterflies are there?

owenwernert · Accepted Answer

Solve for a variable in one of the equations and then use that equality to substitute into the other equation.

1st Eq.

-x + y = 5

y = 5 + x

Substitute this in for "y" in 2nd Eq.

2nd Eq.

4x + y = 10

4x + (5+x) = 10

4x + 5 + x = 10

5x + 5 = 10

5x = 10 - 5

5x = 5

x = 5/5

x = 1

The ratio of north american butterflies to south american butterflies at a butterfly

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