4 packs of twelve cards and 3 packs of eight .
3 packages of 8 and 4 packages of 12
12 x 4 = 48 8 x 3 = 24
48 + 24 = 72 Cards
Brighton can buy either 0 packages of 12 cards and 9 packages of 8 cards, or 4 packages of 12 cards and 3 packages of 8 cards, or 6 packages of 12 cards and 0 packages of 8 cards to total 72 baseball cards.
;