Due to carpal tunnel syndrome, Barbara can only type 212 - 40= <<212-40=172>>172 words per minute.

So, she will be able to finish typing the document in 3440/172 = <<3440/172=20>>20 minutes.

# Answer

20
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Barbara Blackburn can type 212 words per minute.  Due to Carpal tunnel syndrome, Barbara cannot use her left hand for a while so her typing speed is now 40 words less per minute. If she is supposed to type a document with 3440 words, how many minutes will it take her to finish typing the document?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
20
Barbara Blackburn can type 212 words per minute.  Due to Carpal tunnel syndrome, Barbara cannot use her left hand for a while so her typing speed is now 40 words less per minute. If she is supposed to type a document with 3440 words, how many minutes will it take her to finish typing the document?
train