conversations.from: human
conversations.value: 24 gallons per second of water flows down a waterfall. If you have an empty basin that can hold 260 gallons of water. The basin leaks water at 4 gallons per second. how long would it take to fill the basin with water from the waterfall in seconds?
conversations.from: assistant
conversations.value: 24 gallons in minus 4 gallons out is 24-4=20 gallons per second
  260 gallons divided by 20 gallons per second 260/20 = 13 seconds