She hand washes them every 4 weeks and there are 52 weeks in a year so she washes them 52/4 = <<52/4=13>>13 times per year

It takes her 30 minutes to hand wash the pillowcases and she does this 13 times per year for a total of 30*13 = <<30*13=390>>390 minutes per year

# Answer

390
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Every 4 weeks, Helen hand washes her silk pillowcases.  It takes 30 minutes to hand wash all of them.  In 1 year, how much time does Helen spend hand washing her pillowcases?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
390
Every 4 weeks, Helen hand washes her silk pillowcases.  It takes 30 minutes to hand wash all of them.  In 1 year, how much time does Helen spend hand washing her pillowcases?
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