Answer:
$700
Step-by-step explanation:
25 the least amount of money earned by each student multiplied by 28 the number of students.
0.5x + 78.2 = 287
Subtract 78.2 from both sides
0.5x+78.2-78.2= 287-78.2
0.5x = 208.8
Divide both sides by 0.5
0.5x/0.5= 208.8/0.5
x= 417.6
I hope that's help !