A tank contains 7,000L of brine with 17 kg of dissolved salt. Pure water enters the tank at a rate of 70 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? 17e () kg (b) How much salt is in the tank after 30 minutes? (Round your answer to one decimal place.) y-10.4 x kg

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