
Christina B. answered 03/14/19
Experienced, Positive, and Effective Tutor with an M.Ed.
This is an interesting multi-step word problem.
Let's start with the total number of markers.
Ginger's sister has 6 markers.
Ginger has 18 markers.
If you add up what Ginger and her sister have, you will get the total number of markers.
We know that those markers came in 3 boxes. To find how many came in each box, divide the total number of markers by the number of boxes.
total number of markers/3 = number of markers in each box