Question

Which answer best explains how to solve this problem?

Answer 1

It would be B
Ethan ended up with 50 trading cards.
Before Ethan bought 20 cards, he had 50 – 20 = 30 cards.
Before he sold 12 cards, he had 30 + 12 = 42 cards.
Ethan had 42 cards before the swap meet
That would be correct