Question 117310
When you say the ratio was 5:3 adults to kids, that means that out of 8 (5+3), 5 were adults and 3 were students. 
You can then set up a ratio. 
If 3 out of 8 are kids, then the total number of kids, X, to the total attendance is in a ratio. 
{{{3/8=X/480}}}
{{{(3/8)*480=X}}}
{{{X=180}}}
There were 180 kids (and 300 adults) in attendance.