Consider a concentric tube heat exchanger with hot and cold water inlet temperatures of 200 and 35°C, respectively. The flow rates of the hot and cold fluids are 42 and 84 kg/h, respectively. Assume the overall heat transfer coefficient is 180 W/m2 K. If the exchanger is operated in counterflow with a heat transfer area of 0.33 m2 , determine the outlet fluid temperatures.