Answer:
I think the answer is 10 full 6Kg boxes
my first answer if you saw it was miscalculated, sorry.
Adding rational numbers involves adding decimals and repeating decimals like 4.6666666..... Whole numbers on the other hand involves adding 7+6 which arent exactly decimals
Which one 11 or 13. it be easier to know
10 is the answer. Hope that helped