Jackson has 48 trading cards. His sister gives J him 12 more cards. Then he puts all of his trading cards in 6 equal stacks. How many cards, c, are in each stack

there are 10 cards in each stack.

Step-by-step explanation:

if you add 48 (Jacksons cards) and 12 (his sisters cards) you will get 60 (all cards in total). and 60 (total number of cards) divided by 6 (number of piles) is 10. there will be 10 cards in each stack!