Wet leather | Physics homework help

Wet leather containing 61% water enters a continuous tunnel dryer and leaves at a rate of 485lbm/h containing 6.0% water. Dry air enters the dryer at 140°F and 1 atm. and the outlet air is at 130°F and 1 atm with a relative humidity of 50%. Calculate the rate at which wet leather enters the dryer and the volumetric tow rate of the inlet air (ft3/h).