To solve this problem you must apply the proccedure shown below:
If
, you have that:

Because
and 
Therefore, as you can see, the answer is: 
Answer:
69
Step-by-step explanation:
Answer: The fraction is 4/9
Step-by-step explanation: it is 4/9 because there are 4 boys and 5 girl so you add them together and than use the original 4 boys.