There are 55-30 = <<55-30=25>>25 girls at the track meet.

There are (25/5)*3 = <<25/5*3=15>>15 girls with long hair.

There are 25-15 = <<25-15=10>>10 girls with short hair.

# Answer

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<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
There are 55 people at the track meet. 30 of them are boys, and the rest are girls. Three fifths of the girls have long hair, and the rest have short hair. How many girls have short hair?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
10
There are 55 people at the track meet. 30 of them are boys, and the rest are girls. Three fifths of the girls have long hair, and the rest have short hair. How many girls have short hair?
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