Final answer:
Ken had 84 cards, gave away 27, and received 15 more, leaving him with a total of 72 cards.
Step-by-step explanation:
Ken initially has 84 baseball cards. After giving away 27 cards to Kyle, Ken would have 84 - 27 = 57 cards. When Ken receives 15 more cards from Kevin, his new total becomes 57 + 15 = 72 cards.
To find out the final number of cards Ken has, we perform these calculations:
- Subtract the number of cards given away from the initial number: 84 - 27 = 57 cards.
- Add the number of cards received from Kevin to the result from step 1: 57 + 15 = 72 cards.
Therefore, Ken has a total of 72 cards now.