A cube of wood is stationary at the interface between fluid A and fluid $B,$ where $S{G}_B=0\mathrm{.}91S{G}_A=0\mathrm{.}62S{G}_B=0\mathrm{.}91.If$ the cube $is$ oriented such that one $of$ its faces $is$ pointing directly upward, what percentage $of$ its volume $isin$ the fluid A phase?