
David W. answered 11/07/17
Tutor
4.7
(90)
Experienced Prof
"buying packages" means that the options are:
number of number of number of
packages white sheets colored sheets
1 6 18
2 12 36
3 18 54
To get 14 white sheets, Katie must buy 3 packs (with 18 white sheets and 54 colored sheets).

Andy C.
11/07/17