A tank contains 100 kg of salt and 2000 L of water. A solution of a concentration 0.025 kg of salt per liter enters a tank at the rate 7 L/min. The solution is mixed and drains from the tank at the same rate. a.) What is the concentration of our solution in the tank initially? (kg/L) concentration = 100/2000 b.) Find the amount of salt in the tank after 5 hours. (kg) amount = e^(-7*5*60/2000)*2000 c.) Find the concentration of salt in the solution in the tank as time approaches infinity. concentration 0.025 (kg/L)

Water is flowing at the rate of 3 km/hr theough a circular pipe of 20 cm internao diameter into a circular cistern of diameter 10 m and depth 2m.How much time will the cistern be filled ?

A tank contains 3,000 L of brine with 12 kg of dissolved salt. Pure water enters the tank at a rate of 30 L/min. The solution is kept thoroughly mixed and drains from the tank at the same rate. (a) How much salt is in the tank after t minutes? y =     kg (b) How much salt is in the tank after 20 minutes? (Round your answer to one decimal place.) y =

A tank contains 7070 kg of salt and 10001000 L of water. A solution of a concentration 0.035 kg of salt per liter enters a tank at the rate 8 L/min. The solution is mixed and drains from the tank at the same rate.(a) What is the concentration of our solution in the tank initially?(b) Find the amount of salt in the tank after 2.5 hours.(c) Find the concentration of salt in the solution in the tank as time approaches infinity.