North American : South American : European
9 : 5 : 2
Multiply all by 10
90 : 50 : 20
The answer is 50 South American butterflies.
Answer: There are 7,677 streets named as " First Street" and 7, 189 streets named as "Main Street" .
Step-by-step explanation:
Let x be the number of streets named as First Street .
y be the number of streets named as Main Street.
AS per the given information, we have the following system of equations :

Substitute the value of x from (2) in (1) , we get

Put value of y in (2), we get

Hence , there are 7,677 streets named as " First Street" and 7, 189 streets named as "Main Street" .
Answer:
2.66 or 2 2/3
Step-by-step explanation: