[tex]\\ \rm\Rrightarrow Avg\:Weight=\dfrac{Sum\:of\:Weights}{No\:of\:weights}[/tex]
[tex]\\ \rm\Rrightarrow Avg\:weight=\dfrac{2.26+4.96}{2}[/tex]
[tex]\\ \rm\Rrightarrow Avg\;weight=\dfrac{7.23}{2}[/tex]
[tex]\\ \rm\Rrightarrow Avg\:Weight=3.6g[/tex]