Sun Minerals, Inc., is considering issuing additional long$-$term debt to finance an expansion. Currently, the company has $$50$ million in $10$ percent debt outstanding. Its after$-$tax net income is $$12$ million, and the company is in the $40$ percent tax bracket. The company is required by the debt holders to maintain its times interest earned ratio at $3\mathrm{.}3$ or greater. Do not round intermediate calculations.

a$.$ What is the present coverage $($times interest earned$)$ ratio? Round your answer to one decimal place. times

b$.$ How much additional $10$ percent debt can the company issue now and maintain its times interest earned ratio at $3\mathrm{.}3?($Assume for this calculation that earnings before interest and taxes remain at their present level.$)$ Enter your answer in millions. For example, an answer of $$1\mathrm{.}2$ million should be entered as $1\mathrm{.}2,$ not $1,200,000.$ Round your answer to two decimal places.

$

million

c$.$ If the interest rate on additional debt is $12$ percent, how much unused "debt capacity" does the company have? Enter your answer in millions. For example, an answer of $$1\mathrm{.}2$ million should be entered as $1\mathrm{.}2,$ not $1,200,000.$ Round your answer to two decimal places.

$ million