You are designing a system to control the water transport in the fuel cell. A stream of air with a flow rate of 1.0 l/min is humidified at 80 oC as well as is mixed with another stream of air with a flow rate of 1.5 l/min humidified at 60 oC. The resulting stream is cooled to 15 oC. Compute the fraction of water which condenses. The vapor pressure of water at 80, 60 and 15 oC is 47.36, 19.92 and 1.7 kPa, respectively. 1 atm=100 kPa.