TEXT{mix}}}=\frac{{{m}_{W}}{{\theta }_{W}}-\frac{{{m}_{\,i}}{{L}_{\,i}}}{{{c}_{W}}}}{{{m}_{\,i}}+{{m}_{W}}}\] \[\because \,{{m}_{i}}={{m}_{W}}\]Þ\[{{\theta }_{mix}}=\frac{{{\theta }_{W}}-\frac{{{L}_{i}}}{{{c}_{W}}}}{2}\]\[=\frac{80+0-\frac{336}{4.2}}{2}=0{}^\CIRC C\]