In order to determine the correct answer, it would be helpful to set up equations. We do as follows:
Let x = students
y = adults
x + y = 215
.50x + 2y = 250
SOlving simultaneously, we have:
x = 120 students
y = 95 adults
Hope this answers the question. Have a nice day.
Answer:
21
Step-by-step explanation:
Isolate x
So xy - 2 = k
Then
xy = k + 2
x = (k+2)/y
