If the card with the letter X has half the number the card with letter W has, it has 1/2*200= 100
Together, cards with letters W and X have tags that total 100+200 = <<100+200=300>>300.
If the card with the letter Y has the total of the numbers cards with letters, W and X have, then the total for cards with letters W, X, and Y is 300+300 = 600
Since the card with the letter Z has a tag of 200, the total of the numbers the tags have is 600+400= 1000
#### 1000