A wet organic pigment containing 40% by weight CCl4 is to be dried to 4% by weight. The dryer is to operate adiabatically with fresh and recycled air entering the dryer with 0.44 kg CCl4 per kg of dry air. This air leaves the dryer at 0.945 kg CCl4 per kg of dry air. The capacity of the dryer is 250 kg bone dry solid per hour. Calculate the ratio of recycle to fresh air.​