Respuesta :
Answer:
13.5
Step-by-step explanation:
total boxes of granola is = 3 + 2 + 1
                     =  6 boxes
6 boxes = 57 bars
1 box  =  57 / 6
1 box  = 9.5 + 3
      = 13.5 (ANS)
i hope my ans is correct if not i apologise.
The answer is 9.
Marlene brought 3 boxes AND 3 extra bars so you would have to subtract those from the total before dividing.
57-3=54
54/6=9
Marlene brought 3 boxes AND 3 extra bars so you would have to subtract those from the total before dividing.
57-3=54
54/6=9