In the interference level tank shown in the figure, given as q1=h1-h2/R1, q2=h2/R2f, A1=1ft^3, A2=1.25ft^3,R1=1ft/cfm,R2=0.8ft/cf and normal In the state, q1=q2=10cfm. Find the liquid level in the second tank when the inflow flow qi suddenly increases to 11 cfm at any moment and remains the same

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