Superior Sales Limited has share capital of $$20$m as at $31$ December $2017.$ Included in this share capital is $$4$m preferred stocks. The company authorized share capital was $6$ million shares and the share average outstanding were $4$ million.

Required:

a$.$ Calculate the book value per share as at December $31,2017$

b$.$ What percentage of the firm$$s authorized share capital was issued or outstanding.