If Charlize was 20 minutes late, each of her friends was 20+10 = <<20+10=30>>30 minutes late.

The total time for which Charlize's friends were late was 4*30= <<4*30=120>>120 minutes.

Together with Charlize, the three friends were 120+20 = <<120+20=140>>140 minutes late.

# Answer

140
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
At school today, Charlize was 20 minutes late. Four of her classmates were each ten minutes late than she was. What's the total time for which the five students were late?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
140
At school today, Charlize was 20 minutes late. Four of her classmates were each ten minutes late than she was. What's the total time for which the five students were late?
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