The two-tank liquid-level system shown in Fig.Q5 is operating at steady stale when_a step change is made in the flow rate to Tank.1. The transient response is critically damped, and it takes. .0min for the change in level of the second tank to reach 50 percent of the total change. If the ratio of the cross-sectional areas of the tanks is A1/A2=2, calculate: i. The ratio R1/Ry : ii. The time constant for each tank. [16] iii. How long does it take for the change in level of the first tank to rach 909 of the total change? []