What is the question here that I should answer?
The answer would be 35 99/100 because you cannot simplify 99/100
Answer:
The correct answer should be A not 100% sure
There are 80 children. 45 of them are girls. The amount of boys is equal to:

That means there are 45 girls and 35 boys.
The ratio of boys to girls is: 
Simplify:

Your answer is 7:9