He changed 12*2=<<12*2=24>>24 motorcycle tires

He changed 10*4=<<10*4=40>>40 car tires

So he changed 24+40=<<24+40=64>>64 total tires

# Answer

64
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Mike changes tires on different vehicles.  He changes all the tires on 12 motorcycles and all the tires on 10 cars.  How many tires did he change?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
64
Mike changes tires on different vehicles.  He changes all the tires on 12 motorcycles and all the tires on 10 cars.  How many tires did he change?
train