Micaela bought for posters. A week later half of all her posters were lost during a move. There are now only 12 posters left. How many did she start with?
Step-by-step explanation: If she bought x amount of posters and had 12 left after, you'd multiply 12 by 2 and get 24. Half of 24 is 12. So Micaela bought 24 posters.