human
Barney washes his kitchen towels once a week. He owns eighteen towels and uses two at a time that he changes to clean towels daily. He missed one week of laundry. How many days the following week will Barney not have clean towels?
assistant
How many towels does Barney use in a week? ** Barney uses 2 clean towels every day, so he uses 2 * 7 = <<2*7=14>>14 towels a week.
How many towels would Barney need for 2 weeks? ** He missed one week of laundry, so he would need 2 * 14 = <<2*14=28>>28 towels for 2 weeks.
How many towels does Barney have left? ** He owns 18 towels, so he has 28 - 18 = <<28-18=10>>10 less than he needs.
How many days will Barney not have clean towels? ** Thus, Barney will not have clean towels on 10 / 2 = <<10/2=5>>5 days.
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