Mathematics, 24.07.2019 02:30 brookesquibbs
Atank 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. how much salt is in the tank (a) after minutes and (b) after one hour?
Answers: 1
is the amount of salt (in kg) after 
minutes, then 
and the total amount of liquid in the tank remains constant at 1000 L.
, we have 
is continuous, 
is always positive.
and 
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Atank contains 1000 l of pure water. brine that contains 0.05 kg of salt per liter of water enters t...
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