Each motorcycle has 2 tires, so 12 motorcycles * 2 tires/motorcycle = 24 tires.
Each car has 4 tires, so 10 cars * 4 tires/car = 40 tires.
Therefore, the total number of tires that Mike changed is 24 + 40 = 64 tires.
#### 64
The answer is: 64
Below is a math problem. Provide a detailed, step-by-step solution.

### Problem:
If Mike changes tires on 12 motorcycles and 10 cars, what is the total number of tires that he changed?

### Answer:
