$1$ Burrows & Johnson Ltd$.$ an investment management firm, is reviewing Roker Fisheries Corporation $($RFC$),$ which has $4$ subsidiaries. Research has provided company and market information in the table below:

$\backslash$table$[[$Subsidiary$,\%$ of Capital Invested$],[$Seafood$,60,0\mathrm{.}70],[$Real Estate,$25,0\mathrm{.}90],[$Solar energy,$10,1\mathrm{.}30],[$Water Manufacturing,,$1\mathrm{.}50]]$

Beta