SITUATION $19(90-92)$: An embankment has a mass density of $1900k\frac{g}{m^3}.$ Laboratory test shows that the soil has a dry density of $1600k\frac{g}{m^3}$ and the void ratio at its loosest and densest states were $0\mathrm{.}85$ and $0\mathrm{.}42$ respectively. The specific gravity of solid particles is $2\mathrm{.}66.$

$90.$ Determine the moisture content of the embankment.

a$.0\mathrm{.}1755$

c$.0\mathrm{.}1655$

b$.0\mathrm{.}1875$

d$.0\mathrm{.}1975$

$91.$ Determine the saturated density.

a$.,1978\mathrm{.}56k\frac{g}{m^3}$

c$.1988\mathrm{.}50k\frac{g}{m^3}$

b$.,1998\mathrm{.}50k\frac{g}{m^3}$

d$.1968\mathrm{.}56k\frac{g}{m^3}$

$92.$ Determine the relative density of the embankment.

a$.0\mathrm{.}436$

c$.0\mathrm{.}416$