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I have no idea what to do for this. The equation is supposed to model a solution having salty water dumped into a tank that leaks the solution.

? A tank contains 1000L of pure water. Brine that contains .05 kg of salt per liter of water enters the tank at a ra te of 5L/min. Brine that contains .04 kg of salt per liter of water enters the tank at a rate of 10L/min. The solution is kept thoroughly mixed and drains from the tank at a rate of 15L/min. From Stewart Calculus 7e

I am supposed to find the salt at t minutes and at one hour.

I try to simplify this problem by making it .07kg per lit of water at 5L/m and from here I have no idea how to make an equation for this.

  • 0
    Could you copy the problem exactly?2012-06-19
  • 0
    A tank contains 1000L of pure water. Brine that contains .05 kg of salt per liter of water enters the tank at a ra te of 5L/min. Brine that contains .04 kg of salt per liter of water enters the tank at a rate of 10L/min. Te solution is kept thoroughly mixed and drains from the tank at a rate of 15L/min.2012-06-19
  • 3
    Please copy this into the question (with proper attribution)2012-06-19

3 Answers 3