Solve Problem B Already did A

3. Fracking results in contamination of the groundwater around a production well by a mix of highly water-soluble salts and less-soluble hydrocarbons. Among the latter is benzene, which binds to the local soil with Ka = 6.71L/kg. The soil has a solids density of 2.15 kg/L, a porosity of 0.397, and a hydraulic conductivity of 9.8 x 10-5 m/s. At the production well, the water table is 108.8 m above sea level. The nearest groundwater drinking well is 1150 m away, where the water table is 88.6 m above sea level. a. If the salts to not bind to solids, how long will it take them to reach the groundwater well? b. How long will it take for the benzene to reach the groundwater well