The water content of a saturated soil and the specific gravity of soil solids were found to be 30% and 2.70, respectively. Assuming the unit weight of water to be 10 $$kN /m^3$$, the saturated unit weight ($$kN /m^3$$), and the void ratio of the soil are

A saturated sand sample has dry unit weight of 18 $$kN/m^3$$ and a specific gravity of 2.65. If $$\gamma_w$$ = 10 $$kN/m^3$$, the water content of the soil is _____%.

For sand of uniform spherical particles, the void ratio in the loosest and the densest states are ________ and ________ respectively.