Chemical Engineering Question?

A solid material containing 15.0 wt % moisture is dried so that it contains 7.0 wt% water by blowing fresh warm air mixed with recycled air over the solid in the dryer. The inlet fresh air has a humidity of 0.01 kg water/ kg dry air, the air from the drier that is recycled has a humidity of 0.1 kg water/ kg dry air, and the mixed air to the dryer, 0.03 kg water/kg dry air. For a feed of 100 kg solid/h to the dryer, calculate the kg dry air/h in the fresh air, the kg dry air/h in the recycled air, and the kg/h of "dried" product. Please as detailed as possible.