Answer:
The enrollment last year was 5,000
Explanation:
Here, we have the enrollment this year higher than what we have last year by 20%
So we want to know the enrollment last year
Let the enrollment last year be x
Mathematically, the enrollment this year will be;
x + 20% of x = 6,000
Thus;
x + (20/100 * x) = 6000
x + 0.2x = 6000
1.2x = 6,000
x = 6,000/1.2
x = 5,000