Below is an instruction that describes a task. Write a response that appropriately completes the request in Thai. Please answer in Thai.

### Instruction:
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?

### Response:
 ก่อนอื่นให้หาผลรวมของราคาหูฟัง, เครื่องดื่มและขนม, และตั๋ว: $11 + $3 + $16 = $<<11+3+16=30>>30
ต่อมาหาว่าบิฟต้องหารายได้เท่าไหร่ในรถเพื่อไม่ขาดทุน: $30 / ($12 - $2) = <<30/(12-2)=3>>3 ชั่วโมง