We will determine the number of boxes as follows:
*We determine the greatest common factor of 90, 35, and 60. Which is the following:
We factor the numbers 90, 60 & 35:
90 = 2 * 3^2 * 5
60 = 2^2 * 3 * 5
35 = 5 * 7
Now, we build the factor table.
Factor | 90 | 60 | 35 | gcf
2 | 1 | 2 | 0 | 0
3 | 2 | 1 | 0 | 0
5 | 1 | 1 | 1 | 1
7 | 0 | 0 | 1 | 0
So, the number of boxes will be 5.