The ratio of South American butterflies to European butterflies is 3:2. There are 18 South American butterflies at the park. How many European butterflies are there?
Take a look at how your other problem was solved.
18/3 = x/2
or
18/x = 3/2
To find the number of European butterflies, we first need to determine the ratio between South American butterflies and European butterflies.
The given ratio is 3:2, which means for every 3 South American butterflies, there are 2 European butterflies.
We are given that there are 18 South American butterflies.
To find the number of European butterflies, we can set up a proportion:
(South American butterflies / European butterflies) = (given South American butterflies / unknown European butterflies)
Let's plug in the values:
(3 / 2) = (18 / x)
To solve for x, we can cross-multiply:
3 * x = 2 * 18
3x = 36
Dividing both sides by 3:
x = 12
Therefore, there are 12 European butterflies at the park.