Damp fabric of 60% moisture by mass enters a dryer on a conveyor belt. The fabric leaves the dryer at a rate of 475 lbm/hr including 6% moisture by mass. Dry air at 150 degrees F enter the dryer and moist air leaves the dryer at a temperature of 130 degrees F and 50% relative humidity. The dryer is operating at steady state. What is the volumetric flow rate of entering dry air in cubic feet per hour.