Problem $4$: A container with dimensions of $120$ cm length, $80$ cm width, and $100$ cm height

is filled with $0\mathrm{.}15m^3$ of granite, $0\mathrm{.}2m^3$ of sand, and $200$ liters of water at $25C.$

The rest is air at a density of $1\mathrm{.}15k\frac{g}{m^3}.$ Find the average specific volume

and density of the material in the container. Give the answer in $\frac{m^3}{k}g$ and

$)=2750\frac{kg}{m^3},{}_{\text{S}\text{a}\text{n}\text{d}}=1500\frac{kg}{m^3},{}_{\text{W}\text{a}\text{t}\text{e}\text{r}}=(997\frac{kg}{m^3}$