Aratio of north america butterflies to soulth american butteries at a butterflies at the park is 5: 3. the ratio of south american butterflies to eurpopean butterflies is 3: 2. there are 30 north american butterflies at the butterflies at the butterfly park. how many south american butterflies are there

There are 18 south American butterflies in the park

Given that , A ratio of north america butterflies to south american butteries at the park is 5 : 3

And the ratio of south american butterflies to eurpopean butterflies is 3:2.  

There are 30 north american butterflies at the butterflies at the butterfly park

Number of north America butterflies : number of south American butterflies = 5 : 3

30 : number of south American butterflies = 5 : 3

[ since there are 30 north butterflies ]

Number of south American butterflies = 18

Hence, there are 18 south American butterflies in the park.