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Part $1$

Andrew has the following portfolio of assets.

ModifyingAbove and below Start $4$ By $3$ Matrix $1$st Row $1$st Column Bold Stock $2$nd Column $3$rd Column Start $2$ By $1$ Matrix $1$st Row $1$st Column Bold Proportion of $2$nd Row $1$st Column Bold Portfolio Beta EndMatrix $2$nd Row $1$st Column ABC $2$nd Column $3$rd Column $ $8$ comma $0001\mathrm{.}103$rd Row $1$st Column DEF $2$nd Column $3$rd Column $ $11$ comma $000.954$st Row $1$st Column GHI $2$nd Column $3$rd Column $ $6$ comma $0001\mathrm{.}05$ EndMatrix with brackets

What is the beta of$$ Andrew's portfolio?