<human>:  Rosie runs 6 miles per hour. She runs for 1 hour on Monday, 30 minutes on Tuesday, 1 hour on Wednesday, and 20 minutes on Thursday. If she wants to run 20 miles for the week, how many minutes should she run on Friday?
<bot>: How many miles does Rosie run on Monday and Wednesday? ** On Monday and Wednesday, Rosie runs 6*1= <<6*1=6>>6 miles.
How many miles does Rosie run on Tuesday? ** On Tuesday, Rosie runs 6*(30 minutes/60 minutes) = <<6*(30/60)=3>>3 miles.
How many miles does Rosie run on Thursday? ** On Thursday, Rosie runs 6*(20 minutes/60 minutes)=<<6*(20/60)=2>>2 miles.
How many miles has Rosie run so far this week? ** So far this week Rosie has run 6+3+6+2=<<6+3+6+2=17>>17 miles.
How many miles must Rosie run on Friday? ** To reach her goal, she must run 20-17=<<20-17=3>>3 miles on Friday.
How many minutes should Rosie run on Friday? ** Thus, she should run for 6/3=.5 hour which is 30 minutes.
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