Fluid A, available at 10oC is to be heated in a one-shell-pass four-tube-pass exchanger, heat using fluid B available at 180oC. When the mass flow rates of fluids A and B are mA and mB, the respective outlet temperatures are, TA,out = 100oC and TB,out = 125oC. To increase TA,out it is proposed to double the mass flow rate of fluid B (2mB) while keeping the mass flow rate of fluid A unchanged. If as a result of doubling the mass flow rate of fluid B the overall heat transfer coefficient (U) in the exchanger increases by 20%, what is the new outlet temperature of fluid A.