Freshman/Sophomores:400(.50)=200 students

Have pets:200/5=<<200/5=40>>40 students

200-40=<<200-40=160>>160 do not have pets

# Answer

160
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
There are 400 students in a local high school. 50 percent are freshmen or sophomores.  1/5 of freshmen and sophomores own a pet.  How many freshmen and sophomores do not own a pet?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
160
There are 400 students in a local high school. 50 percent are freshmen or sophomores.  1/5 of freshmen and sophomores own a pet.  How many freshmen and sophomores do not own a pet?
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