Answer:
Total number of people in the stadium = 520
Explanation:
Let the total number of people in the stadium = x
Since, 25% of the fans are teenagers, number of teenagers in the stadium
= 25% of x
=

= 0,25x
If the number of teenagers in the stadium = 130
0.25x = 130
x =

x = 520
Therefore, total number of fans in the stadium = 520.