From the bride's side, 20 couples * 2 guests/couple = <<20*2=40>>40 guests attended

From the groom's side, 20 couples * 2 guests/couple = <<20*2=40>>40 guests attended

Therefore 180 guests - (40 guests + 40 guests) = <<180-(40+40)=100>>100 friends attended the reception

# Answer

100
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<|im_start|>user
A couple's wedding reception had 180 people. The bride and groom had each invited 20 couples from their side of the family. The remaining guests were friends. How many friends attended the reception?
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user
100
A couple's wedding reception had 180 people. The bride and groom had each invited 20 couples from their side of the family. The remaining guests were friends. How many friends attended the reception?
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