e$)$ An aquifer has three different formations. Formation A has a thickness of $22ft$ and saturated hydraulic conductivity of $170f\frac{t}{d}.$ Formation B has a thickness of $3\mathrm{.}5ft$ and a conductivity of $99f\frac{t}{d}.$ Formation $C$ has a thickness of $26ft$ and a conductivity of $22f\frac{t}{d}.$ assume that each formation is isotropic and homogenous. Compute the overall horizontal and vertical conductivities $($show your work$)$