Let r be the number of rats and c be the number of real chihuahuas.

We know that r + c = 70 and r = 6c.

Substituting the second equation into the first equation, we get 6c + c = 70.

Combining like terms, we get 7c = 70

Dividing both sides by 7, we get c = 10

Substituting this back into r = 6c, we get r = 10 * 6 = <<6*10=60>>60

# Answer

60
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Bill thought he bought 70 chihuahuas, but some of them turned out to be rats. If the number of rats was 6 times the number of chihuahuas, how many rats did he buy?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
60
Bill thought he bought 70 chihuahuas, but some of them turned out to be rats. If the number of rats was 6 times the number of chihuahuas, how many rats did he buy?
train