He uses 3 detergent pods a week and there are 52 weeks in a year, so he uses 3*52 = <<3*52=156>>156

His detergent has 39 pods per pack and he needs 156 pods, so he will need 156/39 = <<156/39=4>>4 packs of detergent pods

# Answer

4
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Hayes does 3 loads of laundry a week using a detergent pod for each load.  His detergent pods come 39 to a pack.  How many packs of detergent pods will he need to do a full year of laundry?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
4
Hayes does 3 loads of laundry a week using a detergent pod for each load.  His detergent pods come 39 to a pack.  How many packs of detergent pods will he need to do a full year of laundry?
train