If in eight more years Brian will be 40 years old, then currently he is 40 - 8 = 32 years old.
Since Christian is twice as old as Brian, then currently Christian is 32 x 2 = 64 years old.
In eight more years, Christian will be 64 + 8 = 72 years old.
#### 72
The answer is: 72
Below is a math problem. Provide a detailed, step-by-step solution.

### Problem:
Christian is twice as old as Brian. In eight more years, Brian will be 40 years old. How old will Christian be in eight years?

### Answer:
