Problem $8\mathrm{.}07($Portfolio Required Return$)$

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Suppose you are the money manager of a $$3\mathrm{.}42$ million investment fund. The fund consists of four stocks with the following investments and betas:

$\backslash$table$[[$Stock$,$Investment,Beta$],[$A$,$$$360,000,1\mathrm{.}50],[$B$,300,000,(0\mathrm{.}50)$