how do you do this material balance- including conversion of mole fractions to mass fractions and simultaneous equations

Cereal is being dried in a vertical dryer by air flowing counter current to the cereal. To prevent breakage of the cereal flakes, exit air from the dryer is recycled. For each 1000 kg/hr of wet cereal fed to the dryer, calculate the input of moist fresh air in kilograms per hour and the recycle rate in kilograms per hour. Data on stream compositions (note that some are mass and others mole fractions) is provided below. [10 marks] Cereal is being dried in a vertical dryer by air flowing counter current to the cereal. To prevent breakage of the cereal flakes, exit air from the dryer is recycled. For each 1000 kg/hr of wet cereal fed to the dryer, calculate the input of moist fresh air in kilograms per hour and the recycle rate in kilograms per hour. Data on stream compositions (note that some are mass and others mole fractions) is provided below. [10 marks]