prompt: Biff is getting ready for a long bus trip. He spends $11 on the ticket, $3 on drinks and snacks, and $16 on a new pair of headphones to listen to music. Biff plans to do online tasks using the bus's WiFi during his trip. If Biff makes $12/hour working online and has to pay $2/hour to access the bus's WiFi, how many hours long will the bus ride need to be for him to break even?
messages.content: Biff is getting ready for a long bus trip. He spends $11 on the ticket, $3 on drinks and snacks, and $16 on a new pair of headphones to listen to music. Biff plans to do online tasks using the bus's WiFi during his trip. If Biff makes $12/hour working online and has to pay $2/hour to access the bus's WiFi, how many hours long will the bus ride need to be for him to break even?
messages.role: user
messages.content: First calculate how much money Biff spent getting ready for the trip: $11 + $3 + $16 = $<<11+3+16=30>>30
  Now calculate Bill's net income per hour after he pays for WiFi by subtracting the WiFi cost from his gross hourly rate: $12/hr - $2/hr = $<<12-2=10>>10/hr
  Finally, divide the money Bill spent by his net hourly rate to find out how many hours he has to work to break even: $30 / $10/hr = <<30/10=3>>3 hours
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messages.role: assistant