Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
Last year Dallas was 3 times the age of his sister Darcy. Darcy is twice as old as Dexter who is 8 right now. How old is Dallas now?

### Response:
If Darcy is 2 times older than Dexter, then Darcy is 8 * 2 = <<8*2=16>>16 years old.
Last year Darcy was 16 - 1 = <<16-1=15>>15 years old.
Since Dallas was 3 times the age of Darcy last year, that means he was 15 * 3 = <<3*15=45>>45 years old.
Therefore, Dallas is a year older now and is 45 + 1 = <<45+1=46>>46 years old now.
#### 46