**11.3.3. Temperatures (in degrees Fahrenheit) taken around a forced-draft cooling tower are as follows: In Out Air Water 85 102 90 89 The wet-bulb temperature of the entering air is 77F. Assuming that the air leaving the tower is saturated, calculate (a) the humidity of the entering air, (b) the pounds of dry air through the tower per pound of water into the tower, and (c) the percentage of water vaporized in passing through the tower