Question

The ratio of North American butterflies to South American butterflies at a butterfly park is 3 :5

SA to Eur is 3:2 there are 30 north American butterflies how many south American butterflies are there ?

Answer 1

Answer:A) 18

B) 12

Explanation:

The ratio of North America butterflies to South America butterflies at a butterfly park is 5:3. The total ratio is 5 + 3 = 8

Let x represent the total number of south America and north America butterflies. If there are 30 North American butterflies at the butterfly park then,

5/8 × x = 30

5x = 30 × 8 = 240

x = 240/5 = 48

Therefore, the number of south America butterflies are

48 - 30 = 18

The ratio of South America butterflies to European butterflies is 3:2. Total ratio = 3 + 2 = 5

Let y represent the sum of South America and European butterflies. Therefore,

3/5 × y = 18

3y = 5 × 18 = 90

y = 90/3 = 30

Therefore, the number of European butterflies are 30 - 18 = 12