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## Homework Statement

A horizontal layer of soil in a tube 100 x 100 mm in cross-section. water is supplied to maintain a constant head difference of 300 mm across the sample. the coefficient of permeability of the soils in the direction of flow through them are as follows:

Soil A = 10^-2

Soil B = 3 x 10^-3

Soil C = 4.9 x 10^-4

Each of the soil samples width = 150 mm

Find the rate of supply in cm3/hr

## Homework Equations

Kv(eq) = H / (H/K)a + (H/K)b + (H/K)c

q = k A dH/L

## The Attempt at a Solution

Sub. with equation 1: K = 1.2 x 10^-3 cm/s

Sub. directly in equation 2 gives a wrong solution, what should I do?