A 1.5 m3tank fills through inlet A while supplying water through outlets B and C at the rates given below. Determine how long (minutes) it will take until the tank is full if initially the tank contains 261 kg of water. The flow rates are given in kg/min where "t" is in minutes. All flows are at 20oC.
Mass flow rate of A = 3.5 + 2.1*t
Mass flow rate of B = 1.9
Mass flow rate of C = 0.7