$3.$ Old Economy Traders opened an account to short$-$sell $1,000$ shares of Internet Dreams at $\backslash (\backslash$$ $60\backslash )$ per share. The initial margin requirement was $50\backslash \%.($The margin account pays no interest.$)$ A year later, the price of Internet Dreams has risen from $\backslash (\backslash$$ $60\backslash )$ to $\backslash (\backslash$$ $69\mathrm{.}50\backslash ),$ and the stock has paid a dividend of $\backslash (\backslash$$ $7\mathrm{.}80\backslash )$ per share.

Required:

a$.$ What is the remaining margin in the account?

b$-1.$ What is the margin on the short position? $($Round your answer to $2$ decimal places.$)$

b$-2.$ If the maintenance margin requirement is $\backslash (30\backslash \%\backslash ),$ will Old Economy receive a margin call?

c$.$ What is the rate of return on the investment? $($Negative value should be indicated by a minus sign. Round your answer to $2$ decimal places.$)$