A tank contains 1000 l of pure water. Brine that contains 0. 05 kg of salt per liter of water enters the tank at a rate of 5 l/min. Brine that contains 0. 04 kg of salt per liter of water enters the tank at a rate of 10 l/min. The solution is kept thoroughly mixed and drains from the tank at a rate of 15 l/min.

answer; mixture;

answer: wth r u talkig abut wkfnehifnvefhnoufinou3rfnou3rf

explanation:

what are the options and what is the paragraph?

answer:

i havent taken the psat, but i have the sat, make sure to bring some snacks, because youre in there forever, 2 sharp number two pencils, an sat approved calculator, and maybe a jacket.   your phone and any books will be taken up, so don't try to bring them(but they will be given back at the end of the testing).   good luck!   i hope you do well!