Answer:
Students = 336
Adults = 112
Explanation:
What you do is you have to make it into an equation.
Students = 3x
Adults = x
x + 3x = 448
4x = 448
x = 112.
There are 112 adults that went.
You will now times 112 by 3
112 x 3 = 336.
Students = 336
Adults = 112