Density=massvolume\text{Density} = \frac{\text{mass}}{\text{volume}}Density=volumemass
⇒ 0.9 g cm−3=mass400 cm3=360 g0.9\,\mathrm{g\,cm}^{-3} = \frac{\text{mass}}{400\,\mathrm{cm}^3} = 360\,\mathrm{g}0.9gcm−3=400cm3mass=360g
without any loss in the frying process, we have
0.6 g cm−3=360 gv0.6\,\mathrm{g\,cm}^{-3} = \frac{360\,\mathrm{g}}{v}0.6gcm−3=v360g
v=360 g0.6 g cm−3=600 cm3v = \frac{360\,\mathrm{g}}{0.6\,\mathrm{g\,cm}^{-3}} = 600\,\mathrm{cm}^3v=0.6gcm−3360g=600cm3