Lionel gave 1/2 of his baseball cards to Rick. He gave his brother 1/2 of what was left. He then had 12 cards left. How many did he start with?
A. 24. B. 36 C. 48. D. 96
If Lionel started with 48, and he gave 1/2 of them to Rick (24), then he is left with 24. If he then gives his brother 1/2 of that (12) then he has 12 left.