Question

jason bought 4 new baseball trading cards to add to his collection. The next day his dog ate half of his collection. There are now only 43 cards left. How many cards did jason start with

Answer 1

82 cards to start with

Explanation:

Represent the initial count of cards by c.

After Jason added 4 new cards, he had c + 4 cards.

The dog ate half of these: (c + 4)/2, which came to 43 cards.

Thus, (c + 4)/2 = 43 cards. Solving for c, we get c + 4 = 86, so c = 82 cards.