Respuesta :

Answer:

11

Step-by-step explanation:

add 30 then 42 then 18 and divide it in to as many possible

Answer:

ok so the total number of cookies bella got is 30+42+18 = 90. so she has 3 boxes. so divide 90 by 3, we get 30. so if we put 30 cookies in each 3 boxes.