Problem $20-13$ Rights

A company$$s stock currently sells for $$61$ per share. Last week the firm issued rights to raise new equity. To purchase a new share, a stockholder must remit $$15$ and $4$ rights.

a$.$ What is the ex$-$rights stock price? $($Do not round intermediate calculations and round your answer to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

b$.$ What is the price of one right?