a$.$ What is the combined ratio if PXY Inc. has a loss ratio of $73\%,$ a loss adjustment expense of $12\mathrm{.}5\%,$ and a ratio of commissions and other acquisition expenses of $18\%?$

b$.$ What is the combined ratio adjusted for investment yield if the company earns an investment yield of $8\%?$

c$.$ What is the overall profitability ratio of the company?