A soil deposit has three layers of soil. The permeability of the second layer is 1/2 that of the first layer and the permeability of the third layer is 1/3 that of the first layer. The thickness of each layer is equal. What will be its average permeability parallel to the bedding plane?

A soil deposit has three layers of soil. The permeability of the seco

1.	A soil deposit has three layers of soil. The permeability of the second layer is 1/2 that of the first layer and the permeability of the third layer is 1/3 that of the first layer. The thickness of each layer is equal. What will be its average permeability parallel to the bedding plane?
A.	11k
B.	18k
C.	\(\frac{11}{18}k\)
D.	\(\frac{18}{11}k\)
Answer» D. \(\frac{18}{11}k\)