Question

If someone has 30 books to pack in each box and each box only hold 7 books how many books are left

Answer 1

you have two books left over

Explanation:

if you divide 30 by 7 you will get 4.2

that hows you have four boxes

to check yourself you can times 7 by 4 which will give you 28 and that shows you have two that wont fit