The ratio of North American Butterflies to South American butterflies at a butterfly park is 6:4. The ratio of South American butterflies to European butterflies is 4:3. There are 72 North American butterflies at the butterfly park. How many European butterflies are there?
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there are sum

Step-by-step explanation:

There are 36 European Butterflies

Step-by-step explanation:

Step 1: Find the number of South American Butterflies

6:4 will be turned into 72:x

Divide 72 by 6 and we get 12

Multiply 12 by the 4 in the ratio 6:4 and we get 48

= 72 North American Butterflies : 48 South American Butterflies

Step 2: Find the number of European Butterflies

4:3 can be turned into 48:x

We can do the same procedure we did on Step 1

Divide 48 by 4 and we get 12

Multiply 12 by the 3 in the ratio 4:3 and we get 36

= 48 South American Butterflies : 36 European Butterflies

(Note: This formula cannot be used in all ratios because this is a shortcut I use in my head for easy ratios like this one where everything can get divided equally by everything. Also feel free to point out any mistakes.)

she was supposed to add the hours(38.5) and multiply the amount of money she earned(7.50) resulting in $288.75 .

correct me if i'm wrong and if it is i'm truly sorry.