Consider a particle on which constant forces ${\mathrm{F}}_1=\hat{\mathrm{i}}+2\hat{\mathrm{j}}+3\hat{\mathrm{k}}$ and ${\mathrm{F}}_2=4\hat{\mathrm{i}}-5\hat{\mathrm{j}}-2\hat{\mathrm{k}}\mathrm{N}$ act together resulting in a displacement from position ${\mathrm{r}}_1=20\hat{\mathrm{i}}+15\hat{\mathrm{j}} \mathrm{cm}\text{ to }{\mathrm{r}}_2=7\hat{\mathrm{k}} \mathrm{cm}\text{. }$The total work done on the particle is