You collect a soil sample in the field. Here are some soil measurements you took:

Soil volume: $\backslash (10\mathrm{.}1\backslash$mathrm$\{$~cm$\}^\{3\}\backslash )$

Soil mass $($when wet$)$: $15\mathrm{.}4$ g

Soil mass $($when dry$)$: $14\mathrm{.}7$ g

Void ratio: $0\mathrm{.}5$

Find the porosity as a fraction to two decimal places. $($For example, if your answer is $0\mathrm{.}1234,$ write in $0\mathrm{.}12-$ be sure to round appropriately.$)$