7. [16] Consider the setup shown in the figure below in which three soil layers, each 150 mm in length, are located inside a cylindrical tube of diameter 150 mm. Water is supplied to maintain a constant head difference of 300 mm across the sample. The hydraulic conductivities in the direction of flow are given in the table below. The total head at the supply is 700 mm. Find: a. [2] The equivalent conductivity of the soil setup b. [2] Rate of water supply in m³/s c. [6] Total heads at the two piezometers d. [6] Pressure heads at the two piezometers Water supply Soil ABC hA B k (cm/s) 1E-2 150 mm 150 mm 150 mm 3E-3 5E-4 Constant-head difference 300 mm 200 mm